# Meteorological Journal, Kept by the Assistant Secretary at the Apartments of the Royal Society, by Order of the President and Council

**Author(s):** Anonymous  
**Year:** 1832  
**Journal:** Philosophical Transactions of the Royal Society of London  
**Volume:** 122  
**Pages:** 8 pages  
**Identifier:** jstor-107960  
**JSTOR URL:** <https://www.jstor.org/stable/107960>  

---

METEOROLOGICAL JOURNAL,

KEPT BY THE ASSISTANT SECRETARY

AT THE APARTMENTS OF THE

ROYAL SOCIETY,

BY ORDER OF

THE PRESIDENT AND COUNCIL.

MDCCCXXXI.
## METEOROLOGICAL JOURNAL FOR JULY, 1831.

| 9 o'clock, A.M. | 3 o'clock, P.M. | Dew Point at 9 A.M. in degrees of Fahr. | External Thermometer. | Rain, in inches. Read off at 9 A.M. | Direction of the Wind at 9 A.M. | Remarks. |
|-----------------|-----------------|----------------------------------------|----------------------|-----------------------------------|-------------------------------|----------|
| Barom.          | Attach. Therm.   | Barom.                                 | Attach. Therm.        | Fahrenheit. Self-registering.     | Lowest. Highest.              |          |
| 9 A.M.          | 3 P.M.          |                                        |                      | 9 A.M.                            |                               |          |
| 1               | 30.116          | 67.7                                   | 30.085               | 68.4                              | 50                             | 62.7     | 68.6     | 56.3     | 69.2     | N      | Fine—light clouds and wind. |
| 2               | 30.040          | 67.7                                   | 30.007               | 70.7                              | 47                             | 66.4     | 72.8     | 55.8     | 73.7     | WNW   | Fine and clear—light clouds. |
| 3               | 30.038          | 69.3                                   | 30.050               | 69.7                              | 60                             | 64.7     | 70.7     | 58.4     | 73.3     | SW    | A.M. Lowering. P.M. Fine and clear—cloudy. |
| 4               | 30.218          | 68.3                                   | 30.235               | 71.4                              | 49                             | 66.6     | 73.7     | 57.7     | 74.3     | W     | Fine and clear. |
| 5               | 30.238          | 68.7                                   | 30.241               | 70.3                              | 59                             | 69.3     | 72.3     | 59.6     | 73.3     | WSW   | A.M. Cloudy—light wind. P.M. Fine and clear. Evening, showery. |
| 6               | 30.385          | 74.6                                   | 30.366               | 73.9                              | 63                             | 71.5     | 76.7     | 60.5     | 80.5     | N     | Fine and cloudless. |
| 7               | 30.365          | 75.7                                   | 30.308               | 72.7                              | 57                             | 70.3     | 72.3     | 56.7     | 72.7     | E     | Clear and cloudless. |
| 8               | 30.247          | 64.3                                   | 30.225               | 71.7                              | 59                             | 62.4     | 72.5     | 57.3     | 73.2     | NNE   | A.M. Cloudy. P.M. Clear and cloudless. |
| 9               | 30.181          | 70.2                                   | 30.143               | 76.7                              | 55                             | 71.7     | 78.7     | 59.1     | 80.4     | N     | Fine and cloudless. |
| 10              | 30.060          | 71.2                                   | 30.019               | 70.3                              | 63                             | 67.6     | 65.5     | 65.3     | 68.7     | NNE   | Overcast—showery—light brisk wind. Thunder at noon. |
| 11              | 29.905          | 70.5                                   | 29.808               | 71.3                              | 56                             | 67.0     | 71.6     | 57.7     | 72.5     | 0.069 | NNW   | Clear—nearly cloudless. |
| 12              | 29.665          | 67.8                                   | 29.664               | 71.8                              | 57                             | 66.0     | 68.3     | 62.3     | 73.3     | 0.083 | WSW   | Cloudy—light brisk wind. |
| 13              | 29.647          | 66.4                                   | 29.654               | 66.7                              | 59                             | 61.3     | 67.5     | 58.6     | 67.5     | 1.014 | NW    | A.M. Rain. P.M. Fine and clear—cloudy. |
| 14              | 29.760          | 69.3                                   | 29.749               | 68.8                              | 57                             | 63.7     | 68.4     | 56.4     | 68.6     | 0.094 | S     | A.M. Lowering—light wind. P.M. Fine and clear. |
| 15              | 29.763          | 67.8                                   | 29.783               | 69.8                              | 59                             | 65.7     | 68.7     | 57.3     | 71.3     | 0.694 | SW    | Heavy rain early A.M.—Fine and clear—light clouds. |
| 16              | 29.773          | 67.7                                   | 29.797               | 69.7                              | 60                             | 65.6     | 68.8     | 59.5     | 70.7     | 0.241 | SE    | A.M. Clear—cloudy. P.M. Cloudy. |
| 17              | 29.963          | 68.3                                   | 30.000               | 70.2                              | 59                             | 65.0     | 72.0     | 57.7     | 73.4     | NW    | Fine—light clouds and haze. |
| 18              | 30.015          | 67.7                                   | 29.950               | 70.9                              | 55                             | 68.3     | 70.9     | 56.8     | 72.5     | SW    | Fine—cloudy. |
| 19              | 29.930          | 69.3                                   | 29.918               | 70.7                              | 53                             | 67.4     | 68.5     | 56.7     | 72.5     | SSW   | Fair—cloudy. |
| 20              | 29.810          | 67.7                                   | 29.809               | 69.6                              | 55                             | 63.7     | 65.4     | 58.8     | 68.3     | SSW   | Cloudy. |
| 21              | 29.660          | 69.7                                   | 29.659               | 70.6                              | 61                             | 66.4     | 70.3     | 61.7     | 71.7     | 0.067 | SSW   | Fair—cloudy—brisk unsteady wind. Rain and high wind early A.M. |
| 22              | 29.845          | 68.4                                   | 29.822               | 69.3                              | 50                             | 66.7     | 69.0     | 52.6     | 69.7     | 0.094 | SW    | A.M. Fine and clear—light brisk wind. P.M. Cloudy. |
| 23              | 29.835          | 66.7                                   | 29.800               | 67.7                              | 55                             | 63.3     | 64.4     | 52.3     | 67.4     | SW    | Cloudy. |
| 24              | 29.830          | 65.4                                   | 29.886               | 68.7                              | 56                             | 63.4     | 68.6     | 55.6     | 70.7     | 0.031 | NE    | Fair—cloudy—Brisk wind A.M. |
| 25              | 30.071          | 67.3                                   | 30.079               | 70.3                              | 55                             | 63.3     | 71.4     | 52.5     | 72.6     | N     | Fine—cloudy—light wind. |
| 26              | 30.187          | 68.7                                   | 30.176               | 71.3                              | 59                             | 67.3     | 74.7     | 55.4     | 74.7     | NNE   | Fine—light clouds and wind. |
| 27              | 30.245          | 69.6                                   | 30.209               | 73.3                              | 61                             | 70.6     | 79.2     | 59.7     | 79.7     | ESE    | Fine and cloudless. |
| 28              | 30.176          | 71.6                                   | 30.117               | 74.7                              | 62                             | 69.6     | 77.7     | 64.7     | 79.3     | NNW   | Fine and clear—cloudy. Thunder at 7 P.M. |
| 29              | 30.135          | 72.3                                   | 30.123               | 75.7                              | 63                             | 69.6     | 76.4     | 63.3     | 80.8     | E     | Clear—cloudy. Violent thunder-storm from 4 to 5 P.M. |
| 30              | 30.192          | 72.7                                   | 30.157               | 75.3                              | 64                             | 67.6     | 77.4     | 61.3     | 78.7     | 0.436 | N     | A.M. Foggy. P.M. Fine and clear. |
| 31              | 30.133          | 76.7                                   | 30.070               | 76.5                              | 61                             | 73.3     | 77.7     | 60.3     | 79.5     | N     | Fine and clear—light brisk wind. |

Mean Mean Mean Mean Mean Mean Mean Mean Sum

| 30.014          | 69.7           | 29.997 | 71.2 | 57.3 | 67.3 | 71.6 | 58.3 | 76.6 | 2,823 |

Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ............... { 9 A.M. 3 P.M. } { 29.899 29.878 }

### OBSERVANDA.

Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge ......................... = 83 feet 2½ in.

................................................................. above the mean level of the Sea (presumed about) .......... = 95 feet.

The External Thermometer is 2 feet higher than the Barometer Cistern.

Height of the Receiver of the Rain Gauge above the Court of Somerset House ......................... = 79 feet 0 in.

The hours of observation are of Mean Time, the day beginning at Midnight.

The Thermometers are graduated by Fahrenheit's Scale.

The Barometer is divided into inches and decimals.
## METEOROLOGICAL JOURNAL FOR AUGUST, 1831.

| 1831. August | 9 o'clock, A.M. Barom. | Attach. Therm. | 3 o'clock, P.M. Barom. | Attach. Therm. | Dew Point at 9 A.M., Degrees of Fahr. | External Thermometer. | Rain, in inches. Read off at 9 A.M. | Direction of the Wind at 9 A.M. | Remarks |
|--------------|------------------------|---------------|------------------------|---------------|-------------------------------------|----------------------|----------------------------------|-------------------------------|----------|
| ☀ 1          | 30.068                 | 76.3          | 30.021                 | 77.4          | 60                                  | 71.4                 | 73.8                             | 58.6                          | 75.7     | N       |
| ☀ 2          | 29.876                 | 71.3          | 29.878                 | 75.3          | 66                                  | 66.3                 | 70.0                             | 63.6                          | 73.3     | N       |
| ☀ 3          | 29.903                 | 71.3          | 29.893                 | 74.2          | 64                                  | 66.7                 | 70.6                             | 63.7                          | 72.3     | 0.367   | ENE     |
| ☀ 4          | 29.811                 | 72.3          | 29.726                 | 74.4          | 65                                  | 67.3                 | 75.3                             | 61.2                          | 76.7     | 0.361   | E       |
| ☀ 5          | 29.682                 | 71.7          | 29.689                 | 75.4          | 69                                  | 68.7                 | 74.4                             | 65.3                          | 75.3     | E       |
| ☀ 6          | 29.760                 | 73.6          | 29.740                 | 75.7          | 64                                  | 69.4                 | 74.3                             | 60.4                          | 76.3     | 0.375   | SSW     |
| ☀ 7          | 29.687                 | 74.7          | 29.684                 | 75.0          | 64                                  | 70.4                 | 70.7                             | 62.3                          | 75.7     | ESE     |
| ☀ 8          | 29.859                 | 70.3          | 29.869                 | 74.6          | 64                                  | 64.0                 | 76.8                             | 62.0                          | 76.8     | NNW     |
| ☀ 9          | 29.966                 | 71.4          | 29.958                 | 75.5          | 66                                  | 69.2                 | 78.2                             | 64.3                          | 79.7     | NW      |
| ☀ 10         | 30.057                 | 71.3          | 30.099                 | 73.5          | 58                                  | 65.6                 | 72.4                             | 61.3                          | 74.3     | 0.203   | N       |
| ☀ 11         | 30.192                 | 72.7          | 30.152                 | 73.8          | 59                                  | 68.4                 | 73.6                             | 59.7                          | 74.6     | N       |
| ☀ 12         | 30.163                 | 70.3          | 30.123                 | 73.4          | 63                                  | 65.3                 | 72.8                             | 60.3                          | 75.8     | E       |
| ☀ 13         | 30.080                 | 72.6          | 30.014                 | 73.7          | 62                                  | 68.6                 | 72.5                             | 60.7                          | 75.6     | NNW     |
| ☀ 14         | 30.040                 | 71.7          | 30.005                 | 73.4          | 60                                  | 65.3                 | 71.7                             | 56.7                          | 72.6     | 0.042   | N       |
| ☀ 15         | 30.107                 | 70.7          | 30.108                 | 72.7          | 61                                  | 63.5                 | 71.6                             | 55.7                          | 73.2     | N       |
| ☀ 16         | 30.140                 | 68.3          | 30.104                 | 70.6          | 62                                  | 62.7                 | 69.4                             | 57.7                          | 70.2     | E       |
| ☀ 17         | 30.080                 | 69.7          | 29.998                 | 72.5          | 64                                  | 63.7                 | 72.5                             | 60.8                          | 74.3     | 0.017   | W       |
| ☀ 18         | 29.970                 | 68.3          | 29.944                 | 69.4          | 49                                  | 60.3                 | 67.8                             | 66.3                          | 68.3     | 0.264   | N       |
| ☀ 19         | 29.678                 | 66.3          | 29.719                 | 69.6          | 64                                  | 66.9                 | 66.4                             | 58.4                          | 69.7     | 0.014   | WSW     |
| ☀ 20         | 29.666                 | 66.6          | 29.812                 | 68.6          | 59                                  | 61.3                 | 67.5                             | 56.7                          | 67.7     | 0.011   | N       |
| ☀ 21         | 30.096                 | 65.7          | 30.164                 | 70.3          | 61                                  | 62.6                 | 67.5                             | 59.4                          | 68.4     | 0.014   | N       |
| ☀ 22         | 30.310                 | 64.7          | 30.277                 | 69.2          | 59                                  | 60.7                 | 68.0                             | 55.3                          | 68.7     | NNW     |
| ☀ 23         | 30.202                 | 67.7          | 30.180                 | 71.6          | 58                                  | 66.4                 | 73.8                             | 60.8                          | 75.6     | N       |
| ☀ 24         | 29.977                 | 69.7          | 29.869                 | 72.2          | 62                                  | 67.6                 | 70.4                             | 58.7                          | 72.6     | SSW     |
| ☀ 25         | 29.730                 | 67.9          | 29.794                 | 70.5          | 52                                  | 62.7                 | 68.8                             | 59.7                          | 69.5     | 0.033   | W       |
| ☀ 26         | 29.983                 | 70.3          | 29.946                 | 71.6          | 54                                  | 66.7                 | 69.8                             | 54.4                          | 71.5     | SSW     |
| ☀ 27         | 29.975                 | 69.7          | 29.961                 | 72.4          | 65                                  | 68.7                 | 72.4                             | 61.7                          | 75.3     | WSW     |
| ☀ 28         | 30.129                 | 70.3          | 30.160                 | 71.7          | 61                                  | 63.6                 | 69.5                             | 55.7                          | 70.5     | WSW     |
| ☀ 29         | 30.239                 | 69.4          | 30.202                 | 71.0          | 59                                  | 63.7                 | 72.2                             | 55.3                          | 72.7     | WSW     |
| ☀ 30         | 30.147                 | 69.3          | 30.101                 | 72.4          | 63                                  | 66.5                 | 73.0                             | 59.6                          | 74.3     | SSW     |
| ☀ 31         | 29.952                 | 69.7          | 29.948                 | 72.2          | 66                                  | 68.4                 | 68.0                             | 63.7                          | 70.5     | WSW     |

Mean Mean Mean Mean Mean Mean Mean Mean Sum

| 29.985 | 70.2 | 29.972 | 72.7 | 61.4 | 66.0 | 71.5 | 59.9 | 73.2 | 1.701 |

Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ............... { 9 A.M. 3 P.M. }
{ 29.869 29.848 }

### OBSERVANDA.

- Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge ......................... = 83 feet 2½ in.
- .................................................. above the mean level of the Sea (presumed about) .............. = 95 feet.
- The External Thermometer is 2 feet higher than the Barometer Cistern.
- Height of the Receiver of the Rain Gauge above the Court of Somerset House ..................... = 79 feet 0 in.
- The hours of observation are of Mean Time, the day beginning at Midnight.
- The Thermometers are graduated by Fahrenheit's Scale.
- The Barometer is divided into inches and decimals.
## METEOROLOGICAL JOURNAL FOR SEPTEMBER, 1831.

| 9 o'clock, A.M. | 3 o'clock, P.M. | Dew Point at 9 A.M. in degrees of Fahr. | External Thermometer. | Rain, in inches. Read off at 9 A.M. | Direction of the Wind at 9 A.M. | Remarks |
|-----------------|-----------------|----------------------------------------|----------------------|-----------------------------------|-------------------------------|---------|
| Barom.          | Attach. Ther.   | Barom.                                 | Attach. Ther.        | Fahrenheit.                       | Self-registering. Lowest. Highest. | Rain. |
| 29.966          | 66.0            | 29.888                                 | 63.7                 | 58                                | 58.8                          | 53.5   | 55.6 | 59.4 | 0.041 | SW | Rain. |
| 29.843          | 62.0            | 29.883                                 | 64.6                 | 55                                | 55.0                          | 58.7 | 48.2 | 60.4 | 0.922 | SW var. | Fine—light clouds and wind. |
| 29.918          | 60.6            | 29.883                                 | 63.0                 | 52                                | 55.4                          | 62.5 | 47.0 | 63.2 | NNE | Fine and clear. |
| 29.847          | 61.6            | 29.839                                 | 64.3                 | 55                                | 58.3                          | 65.0 | 47.2 | 68.2 | SSW | A.M. Fine. P.M. Light rain. |
| 29.911          | 64.0            | 29.924                                 | 68.9                 | 57                                | 64.2                          | 70.2 | 58.5 | 72.2 | 0.030 | S | A.M. Light rain. P.M. Fine—light clouds. |
| 29.926          | 66.0            | 29.871                                 | 68.0                 | 60                                | 62.8                          | 65.9 | 51.6 | 67.4 | 0.038 | SW | A.M. Overcast. P.M. Fine—light clouds. |
| 29.879          | 65.0            | 29.788                                 | 66.7                 | 55                                | 60.3                          | 62.2 | 51.8 | 64.8 | 0.061 | S | A.M. Nearly cloudless. P.M. Light rain. |
| 29.713          | 62.6            | 29.649                                 | 65.8                 | 52                                | 58.7                          | 62.0 | 48.2 | 65.9 | 0.230 | SW | A.M. Fine. P.M. Light rain. |
| 29.584          | 60.3            | 29.643                                 | 62.8                 | 54                                | 55.2                          | 55.5 | 50.0 | 58.2 | 0.058 | SW | Overcast—light rain. |
| 29.845          | 60.3            | 29.881                                 | 63.6                 | 55                                | 57.9                          | 60.3 | 53.0 | 63.6 | 0.144 | NW var. | A.M. Fair. P.M. Rain. |
| 29.954          | 58.8            | 30.051                                 | 62.5                 | 52                                | 55.6                          | 61.2 | 49.4 | 61.7 | 0.108 | S | Cloudy—rain. |
| 30.202          | 60.8            | 30.210                                 | 63.4                 | 55                                | 58.8                          | 63.7 | 55.9 | 64.6 | S | A.M. Fair. P.M. Cloudy. |
| 30.214          | 61.0            | 30.176                                 | 64.5                 | 54                                | 58.4                          | 64.8 | 54.6 | 66.0 | ENE | Fine—lightly overcast. |
| 30.158          | 61.7            | 30.132                                 | 64.2                 | 53                                | 59.5                          | 63.6 | 55.3 | 64.5 | E | A.M. Fine. P.M. Cloudy. |
| 30.172          | 60.2            | 30.138                                 | 64.0                 | 52                                | 55.5                          | 63.7 | 51.0 | 66.2 | E | Fine and clear. |
| 30.249          | 60.4            | 30.273                                 | 64.2                 | 52                                | 55.2                          | 61.4 | 54.0 | 62.6 | NE | Overcast. P.M. Light rain. |
| 30.239          | 59.9            | 30.208                                 | 63.6                 | 52                                | 57.5                          | 60.3 | 53.2 | 64.3 | WSW | A.M. Fine. P.M. Overcast. |
| 30.120          | 61.0            | 30.049                                 | 64.6                 | 53                                | 58.4                          | 64.8 | 54.0 | 66.8 | SSW | A.M. Fair. P.M. Overcast. |
| 29.917          | 61.4            | 29.860                                 | 65.4                 | 54                                | 58.6                          | 64.8 | 52.2 | 66.8 | ESE | A.M. Fine. P.M. Cloudy. At night rain. |
| 29.859          | 59.4            | 29.851                                 | 63.4                 | 51                                | 54.2                          | 62.0 | 46.9 | 63.5 | 0.041 | SW | Fine and clear. |
| 29.814          | 61.2            | 29.825                                 | 64.5                 | 56                                | 58.8                          | 64.0 | 54.0 | 63.2 | SW | A.M. Light rain. P.M. Fine and clear. |
| 29.934          | 60.3            | 29.949                                 | 63.4                 | 50                                | 54.8                          | 62.6 | 51.0 | 63.6 | WSW | Fine—light clouds. |
| 30.130          | 59.0            | 30.118                                 | 63.2                 | 52                                | 54.2                          | 64.8 | 46.5 | 65.2 | W | Fine—light clouds. |
| 30.241          | 62.4            | 30.173                                 | 65.3                 | 57                                | 60.6                          | 66.6 | 54.5 | 68.2 | S | Fine and clear—light clouds. |
| 30.051          | 63.2            | 29.976                                 | 65.4                 | 57                                | 61.2                          | 66.7 | 54.7 | 67.6 | S var. | Fine—nearly cloudless P.M. |
| 30.039          | 63.0            | 29.936                                 | 64.5                 | 56                                | 58.9                          | 62.2 | 58.0 | 63.8 | 0.033 | S | Overcast—light rain. |
| 29.917          | 62.2            | 29.836                                 | 65.5                 | 54                                | 57.8                          | 66.4 | 55.3 | 66.2 | E | A.M. Light rain. P.M. Nearly cloudless. |
| 29.775          | 63.8            | 29.724                                 | 66.6                 | 57                                | 61.7                          | 67.5 | 57.4 | 68.0 | 0.325 | E | Fine—light clouds. At night, thunder-storm. |
| 29.629          | 65.0            | 29.609                                 | 68.3                 | 60                                | 61.2                          | 67.8 | 59.6 | 69.2 | 0.631 | E | Fair—lightly overcast. |
| 29.540          | 65.0            | 29.433                                 | 68.0                 | 61                                | 62.6                          | 68.3 | 58.5 | 69.5 | SE | A.M. Fine. P.M. Cloudy. At night, thunder-storm. |

**Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr.**

| Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum |
|------|------|------|------|------|------|------|------|-----|
| 29.954 | 61.9 | 29.928 | 64.9 | 54.7 | 58.3 | 63.4 | 52.9 | 65.2 | 2.806 |

---

### OBSERVANDA.

Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge.......................... = 83 feet 2½ in.

......................................................... above the mean level of the Sea (presumed about) ............... = 95 feet.

The External Thermometer is 2 feet higher than the Barometer Cistern.

Height of the Receiver of the Rain Gauge above the Court of Somerset House ......................... = 79 feet 0 in.

The hours of observation are of Mean Time, the day beginning at Midnight.

The Thermometers are graduated by Fahrenheit's Scale.

The Barometer is divided into inches and decimals.
## METEOROLOGICAL JOURNAL FOR OCTOBER, 1831.

| 1831. Octob. | 9 o'clock, A.M. | 3 o'clock, P.M. | Dew Point at 9 A.M. in degrees of Fahr. | External Thermometer. | Rain, in inches. Read off at 9 A.M. | Direction of the Wind at 9 A.M. | Remarks |
|--------------|----------------|----------------|----------------------------------------|----------------------|----------------------------------|-------------------------------|---------|
|              | Barom.         | Attach. Therm. | Barom.                                 | Attach. Therm.       | Fahrenheit                      | Self-registering.             |                      |
| H₂           | 29.311         | 66.2           | 29.340                                 | 68.7                 | 62                              | 63.0                          | 66.6 61.0 68.2 0.261 S Fine—light clouds. Heavy rain at night. |
| O            | 29.365         | 65.2           | 29.455                                 | 67.6                 | 60                              | 61.6                          | 65.4 56.7 65.4 0.188 SE var. Fine—light clouds. |
| D            | 29.720         | 64.0           | 29.781                                 | 66.8                 | 61                              | 60.0                          | 65.0 54.2 66.4 S Fine and clear—light wind. Rain at night. |
| S            | 29.842         | 64.4           | 29.917                                 | 66.0                 | 58                              | 58.8                          | 63.6 56.6 64.7 0.158 WSW Fine and cloudless. Heavy rain at night. |
| ♀            | 29.931         | 63.5           | 29.974                                 | 65.5                 | 58                              | 58.4                          | 62.2 55.3 63.4 0.119 WSW Fine and cloudless. |
| ♣            | 29.951         | 62.7           | 29.934                                 | 65.4                 | 60                              | 61.0                          | 64.8 54.4 66.3 S var. Cloudy—light unsteady wind. Heavy rain at noon. |
| ♀            | 29.754         | 64.3           | 29.691                                 | 66.6                 | 61                              | 63.8                          | 66.6 59.3 67.8 0.033 ESE Fine and cloudless. |
| H₂           | ............... | ............... | 29.643                                 | 63.9                 | ......                           | ......                         | 58.6 57.0 61.2 SE Overcast—light rain. Thunder-storm at 1 P.M. |
| O            | 29.683         | 62.3           | 29.724                                 | 64.3                 | 58                              | 56.5                          | 61.0 53.0 61.6 0.463 WSW Fair—lightly cloudy. |
| D            | 29.667         | 61.2           | 29.647                                 | 63.5                 | 57                              | 58.0                          | 60.7 53.0 63.0 0.003 SW Fine—cloudy—light wind. |
| S            | 29.732         | 61.5           | 29.758                                 | 64.0                 | 58                              | 59.3                          | 60.6 56.6 62.2 S A.M. Fine—light clouds. P.M. Light rain. |
| ♀            | 29.750         | 61.2           | 29.720                                 | 62.8                 | 59                              | 58.7                          | 61.6 56.7 62.2 NW Overcast—light rain. |
| ♣            | 29.697         | 61.4           | 29.633                                 | 64.6                 | 58                              | 60.0                          | 62.5 54.6 64.3 0.725 SSE Overcast—light wind. High wind through the night. |
| ♀            | 29.615         | 63.7           | 29.677                                 | 65.5                 | 61                              | 61.7                          | 62.7 60.7 64.3 SSE var. Lowering—unsteady wind. |
| H₂           | 29.822         | 62.7           | 29.857                                 | 65.4                 | 58                              | 58.6                          | 61.8 56.3 63.3 SSW Fair—lightly overcast. |
| O            | 30.185         | 59.4           | 30.251                                 | 62.3                 | 52                              | 52.7                          | 60.3 48.2 60.3 WSW Fine and clear—light clouds. |
| D            | 30.383         | 58.6           | 30.364                                 | 61.7                 | 55                              | 55.4                          | 60.8 47.6 61.5 W Fine and clear. |
| S            | 30.432         | 59.8           | 30.404                                 | 61.8                 | 58                              | 58.4                          | 60.7 55.3 62.3 W Strong haze. |
| ♀            | 30.266         | 60.7           | 30.174                                 | 62.8                 | 57                              | 57.8                          | 62.8 55.3 63.6 E Fine and cloudless. |
| ♣            | 30.017         | 60.7           | 29.978                                 | 63.3                 | 58                              | 58.4                          | 60.8 53.3 62.3 S Cloudy. |
| O            | 29.951         | 60.9           | 29.962                                 | 62.7                 | 57                              | 57.5                          | 59.0 55.3 59.5 SW Cloudy. Evening, clear. |
| H₂           | 30.066         | 55.6           | 29.981                                 | 58.5                 | 50                              | 53.7                          | 56.4 46.7 58.7 SSE Overcast. Rain P.M. |
| O            | 29.960         | 59.3           | 29.816                                 | 60.7                 | 57                              | 58.8                          | 61.0 53.3 61.0 S Cloudy. P.M. Rain. Evening, clear. |
| D            | 30.099         | 57.3           | 30.058                                 | 60.2                 | 48                              | 51.7                          | 58.0 47.6 58.6 WSW Fine. A.M. Cloudless. |
| S            | 29.891         | 58.0           | 29.764                                 | 59.3                 | 53                              | 56.4                          | 55.8 51.4 58.4 SSE Cloudy. P.M. Light rain. |
| ♀            | 29.536         | 58.5           | 29.572                                 | 60.2                 | 57                              | 57.4                          | 57.8 53.3 59.7 SSE Cloudy. Light shower A.M. |
| ♣            | 29.742         | 57.3           | 29.691                                 | 58.0                 | 52                              | 52.8                          | 54.7 52.3 55.0 0.119 SW Rain. |
| ♀            | 30.077         | 55.8           | 30.204                                 | 58.0                 | 52                              | 52.7                          | 56.5 48.4 57.3 0.036 SW Fine and cloudless. |
| ♣            | 30.314         | 55.4           | 30.267                                 | 58.2                 | 51                              | 51.6                          | 56.3 48.3 57.2 W A.M. Cloudless—fog and deposition. P.M. Cloudy. Evening clear. |
| O            | 30.302         | 52.6           | 30.245                                 | 55.4                 | 44                              | 44.2                          | 52.7 40.3 52.7 WSW A.M. Cloudless—haze and deposition. P.M. Lightly cloudy. |
| D            | 30.208         | 53.9           | 30.176                                 | 56.6                 | 51                              | 51.7                          | 56.2 43.5 57.4 WSW A.M. Fine. P.M. Lightly overcast. |

Mean Mean Mean Mean Mean Mean Mean Mean Sum

| 29.909 | 60.3 | 29.892 | 62.6 | 56.0 | 57.0 | 60.4 | 53.1 | 61.6 | 2.105 |

Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. .................. 9 A.M. 3 P.M. {29.822 29.798}

### OBSERVANDA.

Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge ......................... =83 feet 2½ in. ................................................................. above the mean level of the Sea (presumed about) ......................... =95 feet.

The External Thermometer is 2 feet higher than the Barometer Cistern.

Height of the Receiver of the Rain Gauge above the Court of Somerset House ......................... =79 feet 0 in.

The hours of observation are of Mean Time, the day beginning at Midnight.

The Thermometers are graduated by Fahrenheit's Scale,

The Barometer is divided into inches and decimals.
## METEOROLOGICAL JOURNAL FOR NOVEMBER, 1831.

| 1831 Novemb. | 9 o'clock, A.M. | 3 o'clock, P.M. | Dew Point at 9 A.M. in degrees of Fahr. | External Thermometer | Rain, in inches, Read off at 9 A.M. | Direction of the Wind at 9 A.M. | Remarks |
|--------------|----------------|----------------|----------------------------------------|---------------------|----------------------------------|-------------------------------|---------|
|              | Barom.         | Attach. Therm. | Barom.                                 | Attach. Therm.      | Fahrenheit. Self-registering.     | Lowest. Highest.             | S       |
| 1            | 30.035         | 57.4           | 29.950                                 | 55.8                | 51                                | 53.8                          | 55.2    | 55.3 | S | Cloudy. |
| 2            | 29.777         | 55.6           | 29.730                                 | 56.6                | 53                                | 53.5                          | 52.5    | 52.3 | WSW | Fine—lightly cloudy. |
| 3            | 29.494         | 52.6           | 29.449                                 | 52.9                | 44                                | 46.7                          | 45.0    | 44.3 | SW | Fine—lightly cloudy. |
| 4            | 29.771         | 47.6           | 29.849                                 | 50.3                | 42                                | 42.5                          | 46.8    | 35.6 | W | A.M. Cloudless, P.M. Lightly overcast. |
| 5            | 29.520         | 47.6           | 29.410                                 | 50.7                | 47                                | 47.4                          | 50.5    | 38.3 | S | Overcast. Light rain P.M. |
| 6            | 29.607         | 47.3           | 29.385                                 | 49.7                | 44                                | 44.3                          | 50.2    | 39.7 | WSW | Foggy. Rain P.M. |
| 7            | 29.477         | 50.0           | 29.527                                 | 51.8                | 41                                | 46.9                          | 49.4    | 43.4 | SW | Fine and cloudless. |
| 8            | 29.666         | 49.3           | 29.784                                 | 51.9                | 45                                | 46.8                          | 51.2    | 43.4 | WSW | Fine and cloudless. |
| 9            | 30.155         | 46.4           | 30.245                                 | 48.2                | 39                                | 39.4                          | 46.2    | 37.4 | W | A.M. Strong fog. P.M. Fine. |
| 10           | 30.421         | 43.4           | 30.333                                 | 45.2                | 35                                | 35.3                          | 41.8    | 32.4 | WNW | Foggy. |
| 11           | 30.245         | 47.4           | 30.255                                 | 49.8                | 49                                | 49.4                          | 53.6    | 34.4 | WSW | Foggy. Evening, light rain. |
| 12           | 30.326         | 51.0           | 30.348                                 | 54.0                | 51                                | 52.7                          | 54.3    | 48.7 | NNW | Foggy. |
| 13           | 29.994         | 51.8           | 29.968                                 | 52.7                | 49                                | 49.7                          | 49.4    | 48.4 | W | A.M. Foggy—deposition. P.M. Fine—light clouds. |
| 14           | 30.053         | 45.3           | 29.762                                 | 47.8                | 32                                | 36.4                          | 43.6    | 32.8 | WSW | A.M. Cloudless—light wind. P.M. Hazy. At night, rain. |
| 15           | 29.478         | 44.2           | 29.372                                 | 45.5                | 35                                | 37.4                          | 40.4    | 34.7 | W | A.M. Cloudless, P.M. Lightly overcast. |
| 16           | 29.312         | 41.4           | 29.372                                 | 43.0                | 33                                | 36.3                          | 40.4    | 32.7 | WNW | A.M. Cloudless, P.M. Fair—light haze. Evening, light rain. |
| 17           | 29.585         | 39.7           | 29.546                                 | 40.5                | 33                                | 33.8                          | 36.4    | 31.7 | W | Foggy. Light snow early A.M. |
| 18           | 29.691         | 38.5           | 29.765                                 | 40.8                | 29                                | 31.3                          | 37.6    | 28.7 | WNW | Overcast—foggy. |
| 19           | 29.436         | 40.7           | 29.493                                 | 43.2                | 40                                | 40.4                          | 43.5    | 30.3 | NNW | Fair—light clouds and wind. |
| 20           | 29.838         | 40.7           | 29.882                                 | 42.3                | 35                                | 38.6                          | 40.3    | 33.7 | W | Overcast—light fog. Rain at night. |
| 21           | 29.679         | 44.3           | 29.776                                 | 46.9                | 52                                | 52.4                          | 54.7    | 37.4 | WNW | Overcast—foggy—light wind. Evening, deposition. |
| 22           | 29.850         | 48.8           | 29.893                                 | 50.7                | 54                                | 54.6                          | 57.2    | 51.8 | WSW | Foggy. A.M. Deposition. Evening, light rain. |
| 23           | 29.966         | 52.7           | 29.962                                 | 54.3                | 53                                | 54.6                          | 56.8    | 53.0 | WSW | Overcast. |
| 24           | 30.032         | 53.4           | 30.004                                 | 55.4                | 50                                | 50.6                          | 56.8    | 47.7 | SW | Fine—light clouds. |
| 25           | 29.960         | 54.3           | 29.893                                 | 55.5                | 51                                | 51.2                          | 54.4    | 47.0 | SSW | Cloudy. Evening, light rain. |
| 26           | 29.944         | 54.6           | 30.051                                 | 53.7                | 51                                | 51.5                          | 52.5    | 50.3 | W | Overcast. |
| 27           | 30.321         | 46.7           | 30.367                                 | 47.7                | 32                                | 37.2                          | 41.4    | 35.6 | NE | Overcast. |
| 28           | 30.497         | 43.9           | 30.480                                 | 44.6                | 29                                | 35.8                          | 41.2    | 33.7 | NNW | Foggy—light wind. |
| 29           | 30.547         | 42.7           | 30.526                                 | 42.8                | 36                                | 36.7                          | 43.2    | 36.3 | E | Foggy. |
| 30           | 30.314         | 41.7           | 30.190                                 | 43.3                | 36                                | 36.7                          | 42.8    | 34.3 | W | Light fog. Rain P.M. |

### Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr.

| Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum |
|------|------|------|------|------|------|------|------|-----|
| 29.900 | 47.4 | 29.886 | 48.9 | 42.4 | 49.8 | 47.6 | 39.3 | 49.1 | 0.860 |

### OBSERVANDA.

Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge = 83 feet 2½ in.

above the mean level of the Sea (presumed about) = 95 feet.

The external Thermometer is 2 feet higher than the Barometer Cistern.

Height of the Receiver of the Rain Gauge above the Court of Somerset House = 79 feet 0 in.

The hours of observation are of Mean Time, the day beginning at Midnight.

The Thermometers are graduated by Fahrenheit's Scale.

The Barometer is divided into inches and decimals.
## METEOROLOGICAL JOURNAL FOR DECEMBER, 1831.

| 1831. Decemb. | 9 o'clock, A.M. | 3 o'clock, P.M. | Dew Point at 9 A.M. in degrees of Fahr. | External Thermometer. | Rain, in inches. Read off at 9 A.M. | Direction of the Wind at 9 A.M. | Remarks. |
|---------------|-----------------|-----------------|--------------------------------------|-----------------------|-----------------------------------|-----------------------------|----------|
|               | Barom.          | Attach. Ther.   | Barom.                              | Attach. Ther.         | Fahrenheit.                       | Self-registering.           |                      |
|               |                 |                 |                                     |                       | 9 A.M.                            | Lowest.                     | Highest.                |
| 4 1           | 30.170          | 46.8            | 30.125                               | 47.3                  | 44                                | 44.3                        | 46.8                   | 37.3                  | 47.3                  | 0.078                 | NW                    | Overcast—light wind. |
| ♀ 2           | 30.027          | 46.7            | 30.027                               | 48.4                  | 44                                | 45.0                        | 47.5                   | 44.3                  | 47.5                  |                      | NNW                   | Overcast and foggy.  |
| ♀ 3           | 30.148          | 47.7            | 30.128                               | 47.9                  | 43                                | 44.7                        | 45.8                   | 44.6                  | 45.8                  |                      | NW                    | Foggy—light wind.    |
| ♀ 4           | 30.028          | 47.7            | 29.658                               | 49.3                  | 45                                | 45.7                        | 49.3                   | 44.6                  | 49.7                  |                      | WSW                   | Foggy—light deposition. |
| ♀ 5           | 29.837          | 48.8            | 29.720                               | 49.9                  | ......                             | 44.6                        | 48.2                   | 44.3                  | 48.3                  |                      | WSW                   | Fair—light fog.      |
| ♀ 6           | 29.432          | 48.8            | 29.421                               | 50.3                  | 47                                | 47.5                        | 48.8                   | 42.0                  | 51.3                  |                      | SW                    | Fair—lightly overcast—light wind. |
| ♀ 7           | 28.924          | 50.7            | 28.986                               | 52.4                  | 50                                | 51.3                        | 52.0                   | 47.6                  | 53.3                  |                      | SSE                   | Overcast. High wind with rain A.M. |
| ♀ 8           | 29.139          | 51.3            | 29.124                               | 53.4                  | 51                                | 51.3                        | 54.3                   | 47.8                  | 54.0                  | 0.089                 | SSW                   | Light rain and fog.  |
| ♀ 9           | 29.190          | 55.3            | 29.206                               | 56.3                  | 53                                | 53.4                        | 53.5                   | 51.6                  | 54.6                  |                      | SW                    | A.M. Clear. P.M. Rain. |
| ♀ 10          | 29.418          | 53.8            | 29.569                               | 55.8                  | ......                             | 50.7                        | 51.7                   | 46.7                  | 52.4                  |                      | S                     | Fair—lightly overcast. |
| ♀ 11          | 29.342          | 53.9            | 29.309                               | 55.5                  | 50                                | 52.6                        | 54.2                   | 48.8                  | 55.6                  | 0.305                 | SSE var.              | Light wind. A.M. Fair. P.M. Overcast. |
| ♀ 12          | 29.307          | 53.8            | 29.128                               | 54.6                  | 51                                | 51.2                        | 54.0                   | 49.0                  | 54.2                  |                      | SE var.               | Overcast—light wind. Light rain A.M. |
| ♀ 13          | 29.395          | 53.2            | 29.497                               | 54.4                  | 48                                | 50.0                        | 51.0                   | 48.9                  | 51.2                  |                      | SSW                   | A.M. Fine. P.M. Light rain. |
| ♀ 14          | 29.573          | 51.5            | 29.582                               | 52.2                  | 47                                | 46.8                        | 47.7                   | 44.5                  | 48.6                  |                      | SW                    | Fair—light haze and wind. |
| ♀ 15          | 29.792          | 47.7            | 29.742                               | 49.5                  | 38                                | 39.3                        | 45.8                   | 38.4                  | 47.3                  |                      | WSW                   | { A.M. Cloudless—fog. P.M. Lightly overcast. }
| ♀ 16          | 29.851          | 47.7            | 29.606                               | 50.4                  | 37                                | 38.5                        | 47.6                   | 37.7                  | 50.7                  |                      | SW                    | { A.M. Cloudless—fog and deposition. }
| ♀ 17          | 29.744          | 48.4            | 29.794                               | 49.6                  | 37                                | 40.4                        | 44.0                   | 38.7                  | 47.7                  |                      | WSW                   | { High wind with rain at night. }
| ♀ 18          | 29.373          | 49.5            | 29.412                               | 50.3                  | 44                                | 44.8                        | 45.5                   | 40.7                  | 46.4                  | 0.033                 | SSW                   | Cloudless—hazy.     |
| ♀ 19          | 29.567          | 46.7            | 29.643                               | 47.6                  | 39                                | 39.9                        | 42.5                   | 39.7                  | 42.6                  |                      | WSW                   | A.M. Fog and deposition. P.M. Fine. |
| ♀ 20          | 29.775          | 45.6            | 29.707                               | 47.0                  | 37                                | 40.3                        | 43.7                   | 39.7                  | 44.7                  |                      | SW                    | Cloudless—hazy.     |
| ♀ 21          | 29.657          | 46.0            | 29.742                               | 46.7                  | 42                                | 42.2                        | 43.2                   | 40.5                  | 43.7                  |                      | WSW                   | Light fog and wind.  |
| ♀ 22          | 29.836          | 44.7            | 29.649                               | 46.8                  | 40                                | 40.0                        | 46.3                   | 35.8                  | 46.4                  |                      | SSW                   | Fog and wind.       |
| ♀ 23          | 29.815          | 44.7            | 29.980                               | 46.2                  | 36                                | 38.7                        | 41.3                   | 36.5                  | 41.3                  |                      | WSW                   | Lightly overcast. Deposition A.M. |
| ♀ 24          | 30.233          | 42.2            | 30.262                               | 42.2                  | 33                                | 35.3                        | 35.0                   | 32.9                  | 38.0                  |                      | ......                 | Foggy—light wind.    |
| ♀ 25          | 30.331          | 39.7            | 30.286                               | 39.7                  | 32                                | 32.5                        | 33.6                   | 30.3                  | 34.4                  |                      | WNW                   | Strong fog throughout the day. |
| ♀ 26          | 30.274          | 38.7            | 30.311                               | 40.2                  | 34                                | 34.4                        | 36.8                   | 29.8                  | 37.3                  |                      | WNW                   | A.M. Strong haze. P.M. Lightly cloudy. |
| ♀ 27          | 30.427          | 39.0            | 30.418                               | 40.0                  | 33                                | 35.7                        | 38.3                   | 33.3                  | 38.3                  |                      | ......                 | Strong haze. A.M. and evening. Fine. |
| ♀ 28          | 30.428          | 40.4            | 30.392                               | 42.7                  | 39                                | 39.4                        | 41.0                   | 35.3                  | 41.3                  |                      | NNE                   | P.M.                   |
| ♀ 29          | 30.313          | 41.4            | 30.229                               | 43.5                  | 38                                | 39.5                        | 40.0                   | 37.3                  | 40.7                  |                      | NNE                   | Foggy—light wind.    |
| ♀ 30          | 30.226          | 41.2            | 30.186                               | 41.0                  | 33                                | 36.2                        | 35.9                   | 35.3                  | 36.3                  |                      | NNE                   | Fair—light fog.      |
| ♀ 31          | 30.238          | 38.4            | 30.227                               | 39.6                  | 33                                | 34.6                        | 35.8                   | 32.3                  | 35.7                  |                      | N                     | A.M. Overcast. P.M. Fair. |
|               | Mean            | Mean            | Mean                                 | Mean                  | Mean                              | Mean                        | Mean                   | Sum                   |                      |                       |                       |                       |
|               | 29.800          | 46.9            | 29.776                               | 48.1                  | 41.3                              | 42.9                        | 45.2                   | 40.6                  | 46.0                  | 0.505                 |                       |                       |                       |

Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ............... { 9 A.M. 3 P.M. }
{ 29.751 29.724 }

**OBSERVANDA.**

Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge......................... = 83 feet 2½ in.
.............................................................................................................................. above the mean level of the Sea (presumed about) ................ = 95 feet.

The External Thermometer is 2 feet higher than the Barometer Cistern.

Height of the Receiver of the Rain Gauge above the Court of Somerset House......................... = 79 feet 0 in.

The hours of observation are of Mean Time, the day beginning at Midnight.

The Thermometers are graduated by Fahrenheit's Scale.

The Barometer is divided into inches and decimals.