# 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:** 1830 **Journal:** Philosophical Transactions of the Royal Society of London **Volume:** 120 **Pages:** 8 pages **Identifier:** jstor-107904 **JSTOR URL:** --- METEOROLOGICAL JOURNAL, KEPT BY THE ASSISTANT SECRETARY AT THE APARTMENTS OF THE ROYAL SOCIETY, BY ORDER OF THE PRESIDENT AND COUNCIL. MDCCCXXX. ## METEOROLOGICAL JOURNAL FOR JULY, 1829. | 1829. July | 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. | | | | | | ☉ 1 | 29.647 | 65.3 | 29.513 | 66.9 | 55 | 59.7 | 61.8 | 57.6 | 65.5 | 0.292 | SSE | Overcast—rain. | | ☉ 2 | 29.587 | 73.5 | 29.621 | 68.7 | 51 | 64.6 | 66.7 | 55.7 | 68.7 | 0.097 | SSW | Fine and clear—brisk wind. | | ☉ 3 | 29.609 | 67.8 | 29.477 | 67.7 | 56 | 64.5 | 62.8 | 57.0 | 67.8 | SSE | Cloudy—showery. Rain, with high wind, at night. | | ☉ 4 | 29.631 | 73.5 | 29.573 | 67.8 | 50 | 63.5 | 58.7 | 52.8 | 63.6 | 0.036 | WSW | A.M. Fine and clear. P.M. Overcast. | | ☉ 5 | 29.585 | 63.1 | 29.660 | 67.1 | 51 | 58.4 | 60.7 | 50.7 | 66.7 | 0.089 | W | Cloudy. Evening fine and clear. | | ☉ 6 | 29.876 | 69.7 | 29.893 | 69.3 | 55 | 66.0 | 69.7 | 52.8 | 71.7 | 0.125 | W | Fine and clear—light wind. | | ☉ 7 | 29.878 | 65.7 | 29.741 | 65.9 | 60 | 60.7 | 60.7 | 55.8 | 67.7 | 0.042 | WSW | Overcast—brisk wind. Rain. | | ☉ 8 | 29.834 | 70.3 | 29.786 | 70.7 | 55 | 67.3 | 69.3 | 55.8 | 71.7 | 0.044 | NW | Fine—light clouds. | | ☉ 9 | 29.741 | 67.7 | 29.809 | 68.3 | 51 | 63.2 | 65.7 | 56.7 | 67.7 | SW | Fine—cloudy. | | ☉ 10 | 29.913 | 70.6 | 29.817 | 70.2 | 50 | 66.7 | 65.0 | 53.4 | 68.8 | SSE | A.M. Fine. P.M. Lowering. Evening, rain. | | ☉ 11 | 29.556 | 66.4 | 29.485 | 67.1 | 61 | 62.3 | 61.6 | 58.9 | 65.8 | 0.022 | SSE | Lowering. P.M. Heavy rain. | | ☉ 12 | 29.422 | 67.7 | 29.497 | 69.0 | 62 | 63.7 | 68.0 | 56.7 | 69.2 | 0.514 | WSW | Fine and clear—cloudy. | | ☉ 13 | 29.658 | 66.3 | 29.733 | 70.3 | 60 | 63.7 | 68.5 | 56.4 | 69.5 | 0.100 | SSW | Lowering. | | ☉ 14 | 29.889 | 69.2 | 29.861 | 70.3 | 66 | 66.4 | 68.7 | 62.8 | 73.7 | SSW | Cloudy. Heavy rain A.M. | | ☉ 15 | 30.014 | 74.6 | 29.982 | 73.0 | 60 | 68.7 | 73.5 | 58.3 | 74.7 | 0.125 | W | Fine and clear—light clouds. | | ☉ 16 | 29.947 | 74.3 | 29.958 | 72.9 | 56 | 66.9 | 69.5 | 57.8 | 73.2 | W | Fine. Heavy showers P.M. | | ☉ 17 | 29.910 | 68.3 | 29.683 | 68.0 | 60 | 64.1 | 60.3 | 56.4 | 64.8 | 0.125 | SSE | Lowering—light wind. Rain P.M. | | ☉ 18 | 29.562 | 68.7 | 29.589 | 70.3 | 64 | 64.3 | 66.7 | 59.7 | 69.8 | 0.239 | SE | A.M. Lowering—heavy showers. P.M. Fine. | | ☉ 19 | 29.785 | 70.2 | 29.867 | 71.7 | 60 | 65.9 | 66.4 | 59.8 | 70.2 | 0.322 | NW | Fine—lightly cloudy. | | ☉ 20 | 30.097 | 73.0 | 30.088 | 71.3 | 54 | 66.3 | 70.6 | 51.7 | 71.1 | 0.047 | NW | Fine and clear. | | ☉ 21 | 30.254 | 72.3 | 30.238 | 71.6 | 57 | 66.9 | 73.8 | 54.0 | 74.7 | WSW | Fine—light clouds. | | ☉ 22 | 30.260 | 74.3 | 30.205 | 73.7 | 62 | 69.8 | 76.2 | 59.3 | 78.3 | W | Fine and clear—cloudy. | | ☉ 23 | 30.187 | 68.7 | 30.153 | 72.4 | 62 | 63.7 | 71.4 | 60.7 | 73.3 | W | A.M. Overcast. P.M. Fine. | | ☉ 24 | 30.030 | 75.2 | 29.954 | 74.3 | 66 | 68.0 | 71.7 | 59.3 | 72.0 | E | Fine—cloudy. | | ☉ 25 | 29.873 | 70.6 | 29.897 | 74.5 | 65 | 65.8 | 74.6 | 64.2 | 75.4 | 0.183 | WSW | A.M. Thunder and lightning, from 1h to 2h, with hail and rain. | | ☉ 26 | 30.028 | 65.3 | 30.060 | 65.6 | 57 | 57.8 | 58.9 | 56.0 | 60.6 | N | Overcast. Shower at noon. | | ☉ 27 | 30.101 | 65.1 | 30.102 | 66.9 | 56 | 59.3 | 64.0 | 48.7 | 63.8 | 0.008 | NNE | Fine—light clouds. | | ☉ 28 | 30.098 | 70.7 | 29.999 | 67.7 | 51 | 66.3 | 67.9 | 51.7 | 70.3 | WSW | Fine and clear. | | ☉ 29 | 29.642 | 64.2 | 29.664 | 68.0 | 59 | 60.1 | 69.2 | 58.4 | 69.7 | 0.153 | SE | A.M. Showers, early. Fine—cloudy. | | ☉ 30 | 29.748 | 69.6 | 29.755 | 69.3 | 53 | 64.3 | 67.7 | 51.5 | 69.7 | NNE | Fine—light clouds. Thunder and lightning at 4 P.M. with heavy rain. | | ☉ 31 | 29.977 | 60.7 | 30.070 | 66.7 | 58 | 58.5 | 64.0 | 52.3 | 65.3 | 0.347 | NNW | A.M. Cloudy. P.M. Clear—brisk wind. | ### Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum | |------|------|------|------|------|------|------|------|-----| | 29.850 | 69.1 | 29.830 | 69.6 | 57.5 | 64.1 | 66.9 | 56.2 | 69.8 | 2.910 | ### 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, 1829. | 1829. August | 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. | | | | h 1 | 30.248 67.5 | 30.242 67.6 | 63 63.3 66.0 51.3 68.7 | NNW | A.M. Fine and clear. P.M. Lowering distant thunder. Fine and clear—light clouds and wind. | | ⊙ 2 | 30.289 66.7 | 30.262 68.7 | 57 65.7 72.7 54.3 73.7 | W | Rain—light brisk wind. | | ⊙ 3 | 30.122 66.8 | 29.965 66.7 | 59 65.5 63.0 57.7 67.7 | SW var. | Cloudy—brisk wind. Showery P.M. Fine—light clouds and breeze. P.M. | | ⊙ 4 | 29.826 67.8 | 29.791 66.8 | 55 61.0 62.6 50.7 64.4 | 0.183 | NNW | Cloudy. Lowering. | | ⊙ 5 | 29.912 63.7 | 30.010 66.7 | 57 61.8 65.9 53.8 65.8 | 0.039 | W | A.M. Light rain, early. P.M. Fine. | | ⊙ 6 | 30.078 64.0 | 30.070 68.2 | 60 62.7 66.7 54.3 69.4 | W | Fine and clear—light clouds. | | ⊙ 7 | 30.184 64.7 | 30.207 65.9 | 61 61.7 70.6 60.3 71.7 | E | A.M. Cloudy. P.M. Clear—light clouds. Breeze. | | ⊙ 8 | 30.240 68.4 | 30.188 71.4 | 64 67.0 76.5 58.7 76.5 | E | A.M. Heavy rain, early. P.M. Fine and clear. | | ⊙ 9 | 30.115 67.4 | 30.041 71.2 | 66 66.3 71.2 57.6 71.7 | SSW | Fine—light clouds. | | ⊙ 10 | 29.935 66.2 | 29.921 69.3 | 60 60.7 69.3 60.5 70.2 | 0.406 | W | Fine and clear—light wind. | | ⊙ 11 | 30.123 64.7 | 30.144 67.4 | 53 61.7 67.7 54.8 69.3 | 0.112 | W | A.M. Fine. P.M. Lowering. Light wind. | | ⊙ 12 | 30.137 65.8 | 30.065 69.4 | 61 65.7 70.7 58.3 71.8 | S | Cloudy—heavy rain. | | ⊙ 13 | 29.778 66.3 | 29.728 69.7 | 66 66.2 67.3 61.4 72.8 | SSW | Fine and clear—cloudy. Brisk wind. | | ⊙ 14 | 29.505 65.7 | 29.452 68.2 | 64 64.4 68.2 61.3 69.8 | SE | A.M. Fine & cloudless. P.M. Broken clouds. | | ⊙ 15 | 29.577 60.8 | 29.628 61.8 | 56 56.5 57.8 53.3 60.4 | 0.180 | W var. | Overcast—rain. Light wind. | | ⊙ 16 | 29.967 58.7 | 30.053 61.7 | 54 57.6 61.0 51.0 62.6 | 0.292 | NNW | Fine and clear—cloudy. Showery P.M. | | ⊙ 17 | 30.180 56.8 | 30.155 63.7 | 51 57.0 65.3 46.7 66.4 | W | Fine and clear—cloudy. | | ⊙ 18 | 29.847 59.3 | 29.753 62.7 | 58 58.3 62.4 55.4 61.3 | 0.092 | SSW | Fine and clear—cloudy. Evening clear. | | ⊙ 19 | 29.526 63.7 | 29.476 65.3 | 60 63.7 66.3 58.0 67.3 | 0.147 | WSW | Fine and clear—brisk wind. | | ⊙ 20 | 29.284 60.7 | 29.500 62.7 | 59 59.7 61.3 55.7 63.3 | 0.083 | SSW | Fine and clear—brisk wind. | | ⊙ 21 | 29.841 60.0 | 29.902 62.3 | 52 63.3 62.6 51.8 63.3 | 0.114 | NNW | Fine—light clouds. | | ⊙ 22 | 29.924 58.7 | 29.791 62.3 | 53 59.3 61.4 52.2 63.4 | S | Cloudy. At night, strong high wind with heavy rain. | | ⊙ 23 | 29.514 63.8 | 29.504 67.5 | 63 63.0 66.2 59.5 68.3 | 0.286 | SSW | Cloudy—brisk wind. Rain A.M. | | ⊙ 24 | 29.347 63.3 | 29.525 63.6 | 59 60.4 62.7 59.3 62.9 | 0.128 | W | Lightly cloudy and showery. | | ⊙ 25 | 29.922 58.7 | 29.999 62.3 | 52 58.0 62.5 49.7 63.4 | 0.161 | WSW | Fine and clear—brisk wind. | | ⊙ 26 | 30.060 59.6 | 29.914 62.6 | 57 59.3 61.2 51.3 62.7 | S | Cloudy. At night, strong wind. | | ⊙ 27 | 29.626 62.4 | 29.560 63.3 | 48 60.4 60.9 57.8 65.7 | 0.008 | WSW | Fine and clear. Evening, brisk wind. | | ⊙ 28 | 29.521 58.4 | 29.650 61.6 | 56 58.4 60.3 53.8 61.0 | 0.272 | NW | Light clouds and brisk wind. At night, rain and strong wind. | | ⊙ 29 | 29.918 60.0 | 30.499 64.3 | 59 59.0 64.0 54.7 64.2 | 0.125 | N | Clear—light clouds—strong brisk wind. | | ⊙ 30 | 30.193 57.2 | 30.173 61.0 | 52 55.7 61.3 52.3 62.3 | NNW | Fine and clear—light wind. | | ⊙ 31 | 30.100 56.7 | 30.068 60.7 | 56 56.3 59.7 53.3 60.7 | NNW | Cloudy—light wind. | **Mean** | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum | |------|------|------|------|------|------|------|------|-----| | 29.898 | 62.7 | 29.911 | 65.5 | 57.8 | 61.3 | 65.0 | 55.2 | 66.6 | 2.839 | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ................. { 9 A.M. 3 P.M. } { 29.823 29.828 } ### 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, 1829. | 1829, Septemb. | 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. | SSE | NNE | | 1 | 29.998 | 58.3 | 29.965 | 64.0 | 57 | 57.4 | 63.5 | 54.3 | 64.2 | 0.044 | Cloudy—light wind. Evening, light rain. | | 2 | 29.955 | 60.6 | 29.980 | 65.6 | 59 | 59.7 | 63.8 | 56.4 | 66.5 | 0.008 | Cloudy and foggy. Evening clear. | | 3 | 30.176 | 57.4 | 30.510 | 61.3 | 49 | 55.3 | 62.4 | 52.2 | 63.2 | NW | Fine and clear—lightly cloudy. | | 4 | 30.009 | 58.0 | 29.945 | 61.7 | 50 | 56.6 | 62.0 | 53.6 | 63.3 | W | Fine and clear—cloudy. | | 5 | 29.712 | 58.2 | 29.581 | 62.0 | 56 | 58.3 | 60.3 | 51.9 | 63.5 | SSE | Overcast—light wind. At night, light rain. | | 6 | 29.531 | 61.7 | 29.499 | 63.8 | 59 | 60.8 | 63.3 | 54.8 | 65.2 | 0.005 | Fine—lightly overcast. | | 7 | 29.663 | 59.8 | 29.658 | 64.3 | 54 | 58.5 | 63.7 | 52.3 | 64.3 | S | Fine and clear—light clouds. Showery P.M. | | 8 | 29.496 | 61.3 | 29.563 | 63.4 | 59 | 61.3 | 60.7 | 54.4 | 65.2 | S var. | Heavy rain, early A.M. Fine and clear—brisk wind. | | 9 | 29.671 | 59.7 | 29.682 | 64.2 | 55 | 58.7 | 64.2 | 52.7 | 65.5 | 0.389? | Fine and clear—light wind. | | 10 | 29.387 | 62.7 | 29.357 | 66.5 | 61 | 62.0 | 66.7 | 58.8 | 66.7 | SE | A.M. Cloudy. P.M. Fine and clear. | | 11 | 29.606 | 60.0 | 29.689 | 64.6 | 55 | 59.4 | 62.8 | 55.4 | 65.2 | WSW | Light brisk wind. | | 12 | 29.663 | 59.2 | 29.630 | 63.3 | 54 | 57.3 | 60.3 | 50.3 | 63.7 | 0.203 | Fine and clear—cloudy. Light showers. | | 13 | 29.565 | 56.0 | 29.442 | 62.4 | 53 | 55.7 | 61.4 | 47.5 | 62.7 | 0.011 | Fine and clear. Heavy rain at night. | | 14 | 29.208 | 57.3 | 29.300 | 61.6 | 48 | 54.4 | 56.6 | 52.4 | 61.6 | W | A.M. Fine. P.M. Showery. | | 15 | 29.668 | 53.7 | 29.765 | 60.4 | 45 | 53.0 | 59.1 | 44.9 | 61.3 | 0.050 | Very clear. P.M. Showery: at 4h. thunder and lightning. | | 16 | 29.561 | 54.7 | 29.535 | 57.2 | 52 | 52.5 | 54.7 | 49.5 | 54.7 | 0.408 | Foggy. Light brisk wind. | | 17 | 29.868 | 55.3 | 29.807 | 59.2 | 50 | 50.6 | 57.9 | 44.8 | 58.3 | 0.033 | Overcast. At night, rain. | | 18 | 29.175 | 56.7 | 29.161 | 61.2 | 56 | 56.7 | 59.7 | 45.0 | 63.8 | 0.389 | Fine—lightly cloudy. | | 19 | 29.472 | 56.7 | 29.631 | 56.8 | 54 | 54.5 | 55.2 | 51.7 | 56.7 | NW | Overcast. | | 20 | 29.929 | 55.9 | 29.898 | 58.7 | 51 | 51.7 | 58.4 | 45.7 | 58.8 | 0.089 | Fine—light clouds. | | 21 | 29.761 | 56.7 | 29.798 | 61.3 | 54 | 56.4 | 61.0 | 51.4 | 62.3 | 0.011 | Fine and clear—light clouds. | | 22 | 29.880 | 55.7 | 29.812 | 60.5 | 53 | 55.7 | 60.0 | 48.4 | 61.4 | 0.056 | Fine—lightly cloudy. | | 23 | 29.834 | 56.7 | 29.844 | 60.6 | 53 | 53.9 | 59.4 | 51.2 | 62.7 | 0.019 | Fine—hazy. | | 24 | 29.957 | 55.7 | 29.913 | 59.6 | 51 | 53.7 | 58.2 | 51.6 | 59.7 | WSW | A.M. Strong haze. P.M. Fine. | | 25 | 30.125 | 53.7 | 30.146 | 58.7 | 53 | 52.7 | 58.4 | 48.3 | 58.8 | N | Fine. Strong fog at night. | | 26 | 30.232 | 51.6 | 30.168 | 59.4 | 49 | 51.2 | 59.3 | 46.2 | 62.0 | N | Strong haze. | | 27 | 29.892 | 60.7 | 29.797 | 61.3 | 58 | 61.8 | 60.3 | 50.4 | 62.0 | WSW | Fine and clear—light wind. Showers at noon. | | 28 | 29.876 | 52.9 | 29.873 | 58.0 | 46 | 51.4 | 54.2 | 46.3 | 56.7 | 0.044 | Fine—light clouds. | | 29 | 29.983 | 51.0 | 29.986 | 54.6 | 42 | 48.6 | 54.0 | 44.3 | 54.3 | N | Fine—light clouds. | | 30 | 30.213 | 50.2 | 30.212 | 54.8 | 43 | 44.3 | 54.2 | 42.4 | 54.3 | N | A.M. Strong fog. P.M. Fine & clear. | Mean Mean Mean Mean Mean Mean Mean Mean Mean Sum Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ............... { 9 A.M. 3 P.M. } { 29.709 29.702 } ### 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, 1829. | 1829. October | 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 | | | | 1/4 1 | 30.252 52.0 | 30.220 58.8 | 51 | 53.0 | 59.6 | 43.6 | 59.7 | ENE | Fine—light brisk wind. | | 2/4 2 | 30.040 56.7 | 29.966 58.6 | 53 | 57.4 | 57.8 | 51.9 | 58.8 | E | Overcast—showery. Brisk wind A.M. | | 3/4 3 | 29.840 58.9 | 29.788 58.6 | 55 | 58.8 | 56.8 | 54.3 | 58.8 | SSW | Overcast. Heavy showers P.M. | | 4/4 4 | 29.968 53.6 | 29.951 58.4 | 52 | 53.0 | 57.7 | 47.7 | 58.3 | W | A.M. Fine. P.M. overcast. | | 5/4 5 | 29.571 56.7 | 29.570 59.1 | 54 | 54.8 | 56.8 | 52.7 | 59.4 | W | A.M. Rain. P.M. Fine. | | 6/4 6 | 29.670 51.4 | 29.675 54.2 | 46 | 50.2 | 52.5 | 44.6 | 53.4 | NW | Fine—light haze. | | 7/4 7 | 29.509 49.0 | 29.443 40.2 | 38 | 46.5 | 37.4 | 42.3 | 46.5 | W | Overcast. Rain and snow P.M. | | 8/4 8 | 29.808 43.8 | 29.921 46.9 | 27 | 39.5 | 47.5 | 33.3 | 47.5 | W | Fine and cloudless. A.M. Strong wind early. | | 9/4 9 | 30.203 41.8 | 30.229 47.5 | 31 | 40.3 | 47.0 | 34.3 | 47.0 | NW | Fine and cloudless—hazy. | | 10/4 10 | 30.432 44.0 | 30.428 50.4 | 41 | 43.7 | 54.7 | 35.7 | 56.0 | WSW | Overcast and hazy. | | 11/4 11 | 30.317 51.7 | 30.211 55.1 | 49 | 52.6 | 57.7 | 43.0 | 57.7 | W | Cloudy—light wind. | | 12/4 12 | 30.152 54.7 | 30.138 56.2 | 48 | 54.7 | 56.2 | 52.2 | 56.3 | NW | A.M. Cloudy. P.M. Fine. | | 13/4 13 | 30.039 55.2 | 29.873 57.2 | 49 | 55.4 | 56.8 | 50.3 | 57.5 | SW | Lightly cloudy. | | 14/4 14 | 29.420 56.7 | 29.578 51.0 | 51 | 52.8 | 48.8 | 52.3 | 52.8 | NNW | Cloudy—light rain. | | 15/4 15 | 30.227 43.7 | 30.259 48.8 | 34 | 41.7 | 48.5 | 37.3 | 47.7 | N var | Fine and cloudless—hazy. | | 16/4 16 | 30.075 48.6 | 29.944 51.4 | 39 | 47.3 | 51.0 | 39.5 | 54.1 | SSW | Overcast. | | 17/4 17 | 30.047 52.3 | 30.119 55.5 | 45 | 51.3 | 55.4 | 46.8 | 55.7 | NW | Fine—light breeze. | | 18/4 18 | 30.127 55.3 | 30.129 59.0 | 54 | 56.0 | 61.1 | 50.8 | 61.4 | WSW | A.M. Cloudy. P.M. Cloudless—light wind. | | 19/4 19 | 30.080 57.7 | 30.050 60.8 | 57 | 58.2 | 59.8 | 53.3 | 60.5 | SW | A.M. Cloudy. P.M. Clear—light clouds. | | 20/4 20 | 29.873 58.8 | 29.808 60.5 | 56 | 57.5 | 59.4 | 55.5 | 60.2 | SW | Clear—light clouds. | | 21/4 21 | 29.805 57.0 | 29.703 58.6 | 53 | 53.8 | 57.0 | 48.3 | 57.7 | S | A.M. Clear and cloudless. P.M. Cloudy. Evening rainy. | | 22/4 22 | 29.658 54.4 | 29.728 55.1 | 42 | 51.4 | 53.0 | 48.6 | 53.7 | W | A.M. Cloudy. P.M. Fine. | | 23/4 23 | 29.955 49.7 | 29.934 51.6 | 41 | 44.8 | 49.8 | 41.7 | 49.8 | 0.019 | Fine—hazy. | | 24/4 24 | 29.957 46.7 | 29.913 51.5 | 43 | 45.7 | 51.2 | 39.8 | 51.2 | NNE | Fine—light clouds. | | 25/4 25 | 30.141 45.4 | 30.197 52.8 | 42 | 44.3 | 51.8 | 40.2 | 51.8 | NNW | Fine—hazy. | | 26/4 26 | 30.350 50.0 | 30.344 51.5 | 48 | 48.7 | 51.0 | 43.7 | 50.7 | NNE | Hazy. | | 27/4 27 | 30.397 46.3 | 30.322 49.5 | 41 | 41.7 | 49.5 | 40.2 | 49.7 | NNW | A.M. Foggy. P.M. Cloudless—hazy. | | 28/4 28 | 30.245 50.8 | 30.278 51.2 | 48 | 48.6 | 48.6 | 41.3 | 49.7 | NNE | Clear—light clouds and wind. | | 29/4 29 | 30.347 43.7 | 30.275 47.5 | 36 | 42.1 | 45.4 | 39.2 | 45.4 | NNE | Fine—hazy. | | 30/4 30 | 30.092 46.7 | 30.499 53.0 | 43 | 46.3 | 52.2 | 39.9 | 53.1 | WSW | Lightly cloudy—hazy. Rain P.M. | | 31/4 31 | 29.917 51.7 | 29.990 45.7 | 44 | 46.9 | 49.8 | 45.4 | 49.8 | NNE | A.M. Overcast. P.M. Clear—light clouds. | **Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr.** \[ \text{Mean} = 30.016 \] \[ \text{Mean} = 51.1 \] \[ \text{Mean} = 30.016 \] \[ \text{Mean} = 53.4 \] \[ \text{Mean} = 45.5 \] \[ \text{Mean} = 49.6 \] \[ \text{Mean} = 53.0 \] \[ \text{Mean} = 44.8 \] \[ \text{Mean} = 53.9 \] \[ \text{Sum} = 1,548 \] ### OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge = 83 feet 2½ in. 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, 1829. | 1829. Novem. | 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. | Barom. Attach. | Fahrenheit. | Self-registering. | Lowest. Highest. | | | | | Therm. | Therm. | 9 A.M. | | | | | | | | | 3 P.M. | | | | | | 1 | 30.157 | 43.8 | 30.171 | 44.5 | 27 | 35.7 | 41.8 | 31.7 | 41.8 | 0.025 | NW | Cloudless—hazy. | | 2 | 30.196 | 41.7 | 30.212 | 46.8 | 36 | 39.3 | 47.2 | 32.8 | 47.2 | WSW | Fine—hazy. | | 3 | 30.209 | 45.9 | 30.132 | 47.6 | 38 | 43.6 | 47.2 | 38.3 | 47.3 | WSW | Lightly cloudy—hazy. | | 4 | 29.803 | 48.7 | 29.647 | 51.0 | 45 | 48.2 | 50.8 | 43.0 | 51.3 | S | Overcast and foggy. Rain P.M. | | 5 | 29.967 | 48.8 | 30.267 | 51.5 | 43 | 49.2 | 50.4 | 39.7 | 50.4 | 0.131 | W | Nearly cloudless. | | 6 | 29.978 | 50.0 | 29.877 | 53.6 | 45 | 48.3 | 52.0 | 42.3 | 52.7 | WSW | Lightly cloudy—hazy. | | 7 | 29.908 | 49.3 | 29.884 | 51.2 | 42 | 45.2 | 48.8 | 42.8 | 48.8 | 0.011 | WNW | Nearly cloudless—hazy. | | 8 | 30.017 | 42.5 | 30.015 | 49.6 | 38 | 38.5 | 47.0 | 34.6 | 46.6 | WSW | Fine—lightly cloudy—light wind. | | 9 | 30.046 | 47.7 | 30.081 | 49.6 | 43 | 43.8 | 48.4 | 37.4 | 48.4 | W | Fine—lightly cloudy—light wind. | | 10 | 30.007 | 48.4 | 29.866 | 51.2 | 43 | 43.3 | 49.5 | 43.3 | 52.4 | SSW | Lightly cloudy. | | 11 | 29.964 | 48.6 | 30.018 | 51.4 | 42 | 42.4 | 48.8 | 40.3 | 52.2 | W | Strong fog. | | 12 | 29.884 | 51.6 | 29.839 | 55.6 | 52 | 52.7 | 56.4 | 41.2 | 56.4 | 0.278 | W | Overcast—foggy. | | 13 | 30.052 | 54.6 | 30.160 | 52.4 | 50 | 50.4 | 47.0 | 49.8 | 50.4 | 0.006 | E | Overcast—foggy. | | 14 | 30.185 | 51.4 | 30.117 | 51.8 | 43 | 44.1 | 46.8 | 41.4 | 47.8 | 0.006 | E | Overcast—foggy. | | 15 | 29.890 | 51.8 | 29.822 | 55.6 | 48 | 48.5 | 51.8 | 42.7 | 51.8 | WSW | Lightly cloudy. Light rain. | | 16 | 30.169 | 46.3 | 30.247 | 48.0 | 31 | 38.4 | 41.2 | 35.4 | 41.4 | 0.011 | N | Clear and cloudless—light wind. | | 17 | 30.377 | 42.6 | 30.314 | 45.8 | 34 | 34.8 | 41.4 | 31.3 | 41.4 | NNE | A.M. Cloudless. P.M. Light clouds. | | 18 | 30.387 | 43.7 | 30.388 | 46.2 | 38 | 38.3 | 41.8 | 33.8 | 41.8 | NNE | Light clouds and haze. | | 19 | 30.428 | 39.7 | 30.364 | 40.5 | 32 | 32.3 | 35.5 | 30.3 | 35.5 | NNE | Strong fog. | | 20 | 30.352 | 39.2 | 30.300 | 40.2 | 30 | 30.3 | 36.4 | 27.5 | 36.4 | NW | Very dense fog. Hoar frost A.M. | | 21 | 30.286 | 37.9 | 30.204 | 39.8 | 32 | 32.4 | 38.6 | 26.8 | 38.6 | NW | A.M. Strong fog. P.M. Fine. | | 22 | 29.662 | 39.2 | 29.477 | 41.8 | 38 | 38.3 | 42.0 | 31.3 | 42.0 | SSW | Cloudy—light rain. | | 23 | 29.603 | 40.7 | 29.103 | 42.5 | 38 | 40.3 | 40.8 | 36.2 | 41.7 | 0.064 | NNE | Light clouds. Rain P.M. | | 24 | 29.662 | 40.6 | 29.016 | 40.6 | 33 | 39.2 | 38.0 | 36.4 | 38.8 | 0.019 | NE | Overcast—light brisk wind. | | 25 | 29.526 | 37.2 | 30.109 | 37.2 | 32 | 31.9 | 33.0 | 29.7 | 36.3 | NE | Snow. | | 26 | 29.858 | 38.6 | 29.796 | 40.5 | 36 | 37.8 | 39.2 | 30.3 | 39.2 | 0.128 | E | A.M. Overcast. P.M. Fine. | | 27 | 29.779 | 41.9 | 29.720 | 42.2 | 38 | 38.4 | 40.4 | 36.2 | 40.4 | 0.014 | N | A.M. Strong fog. P.M. Light deposition. | | 28 | 29.751 | 42.3 | 29.237 | 43.7 | 40 | 40.0 | 42.5 | 36.6 | 42.5 | NNE | Foggy. | | 29 | 29.860 | 44.0 | 29.843 | 45.3 | 41 | 41.7 | 43.7 | 39.3 | 43.7 | NNE | Foggy. | | 30 | 29.858 | 43.7 | 29.815 | 44.2 | 39 | 40.7 | 40.0 | 38.9 | 40.7 | ESE | Foggy—light wind. | Mean Mean Mean Mean Mean Mean Mean Mean Sum | 29.994 | 44.7 | 29.935 | 46.7 | 38.9 | 40.7 | 44.3 | 36.7 | 44.9 | 0.693 | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. .............. { 9 A.M. 3 P.M. } { 29.966 29.902 } ### 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, 1829. | 1829, Decem. | 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. | | | 1 | 29.817 | 43.3 | 29.843 | 40.4 | 40 | 40.1 | 39.8 | 38.9 | 40.7 | ESE | Light clouds and wind. | | 2 | 29.753 | 42.7 | 29.714 | 44.2 | 40 | 40.6 | 43.4 | 38.3 | 43.4 | E | Foggy. | | 3 | 29.799 | 43.8 | 29.995 | 44.5 | 41 | 41.5 | 42.8 | 39.8 | 42.8 | ESE | Foggy—light wind. | | 4 | 29.801 | 44.7 | 29.842 | 46.0 | 44 | 43.6 | 44.6 | 40.4 | 44.6 | ESE | Light fog. | | 5 | 30.272 | 46.6 | 30.349 | 48.2 | 45 | 45.5 | 48.5 | 42.7 | 48.5 | ESE | Foggy. | | 6 | 30.522 | 47.3 | 30.490 | 46.3 | 42 | 42.0 | 39.7 | 41.3 | 42.0 | ENE | Overcast—light wind. | | 7 | 30.374 | 39.7 | 30.273 | 40.1 | 29 | 32.3 | 35.2 | 28.4 | 35.4 | NE | Foggy. Hoar frost A.M. | | 8 | 30.313 | 39.8 | 30.341 | 39.5 | 29 | 35.0 | 35.4 | 30.9 | 35.4 | WSW | Overcast—light wind. | | 9 | 30.379 | 39.3 | 30.291 | 38.2 | 29 | 33.4 | 36.0 | 31.4 | 36.0 | NNE | A.M. Foggy. P.M. Fine. | | 10 | 30.139 | 38.2 | 30.100 | 38.6 | 33 | 35.7 | 36.2 | 33.2 | 36.2 | ENE | Overcast. | | 11 | 30.163 | 40.0 | 30.151 | 41.0 | 31 | 37.6 | 39.2 | 31.7 | 39.2 | SSE | A.M. Overcast. P.M. Fine. | | 12 | 30.180 | 40.6 | 30.172 | 42.0 | 35 | 38.7 | 41.2 | 35.0 | 42.6 | SSW | Light clouds and wind. | | 13 | 30.230 | 43.2 | 30.213 | 46.4 | 39 | 39.7 | 46.0 | 37.7 | 46.0 | S | Clear and cloudless—light wind. | | 14 | 30.304 | 43.3 | 30.306 | 43.8 | 37 | 37.0 | 39.6 | 35.2 | 39.6 | N | Strong fog. | | 15 | 30.341 | 40.0 | 30.306 | 40.8 | 33 | 33.7 | 39.6 | 31.6 | 39.6 | N | Fog. | | 16 | 30.268 | 41.3 | 30.191 | 41.2 | 37 | 37.0 | 39.5 | 32.7 | 39.5 | N | Lightly cloudy. Evening, drizzling rain. | | 17 | 29.985 | 39.6 | 29.884 | 40.6 | 35 | 35.3 | 37.5 | 34.4 | 37.5 | 0.017 | NNE | Overcast. | | 18 | 29.628 | 40.3 | 29.672 | 41.4 | 35 | 36.0 | 38.0 | 31.8 | 38.3 | NE | Cloudy and foggy. A.M. light snow. | | 19 | 29.868 | 39.3 | 29.828 | 40.4 | 34 | 35.6 | 36.5 | 32.8 | 37.0 | N | Light clouds and wind. | | 20 | 29.852 | 37.6 | 29.877 | 37.2 | 26 | 32.3 | 33.1 | 30.7 | 33.1 | N | Overcast—light wind. A.M. Fall of snow, early. | | 21 | 29.918 | 34.7 | 29.830 | 36.0 | 25 | 28.3 | 33.0 | 26.3 | 33.0 | WSW | Foggy. Snow P.M. | | 22 | 29.721 | 34.7 | 29.716 | 36.8 | 30 | 32.3 | 34.8 | 27.0 | 34.8 | 0.033 | E | Overcast. | | 23 | 29.747 | 34.6 | 29.678 | 32.5 | 27 | 31.7 | 29.0 | 29.7 | 31.7 | 0.044 | NNE | Overcast—brisk wind. | | 24 | 29.714 | 30.8 | 29.738 | 31.8 | 25 | 27.7 | 28.9 | 24.6 | 30.3 | 0.008 | N | Overcast. Snow A.M. | | 25 | 30.026 | 32.9 | 30.067 | 33.8 | 25 | 29.4 | 30.6 | 26.5 | 30.6 | NE | Light clouds and wind. | | 26 | 30.307 | 30.5 | 30.330 | 30.5 | 22 | 27.3 | 28.0 | 25.6 | 28.0 | N | Fine—light clouds. | | 27 | 30.403 | 29.2 | 30.380 | 30.8 | 24 | 25.8 | 28.5 | 25.5 | 28.5 | NE | A.M. Fine. P.M. Overcast. | | 28 | 30.329 | 26.5 | 30.230 | 28.6 | 20 | 20.5 | 29.8 | 18.2 | 29.8 | NW | Overcast. | | 29 | 30.302 | 28.0 | 30.313 | 28.2 | 21 | 24.5 | 26.5 | 20.2 | 27.2 | NE | Overcast—light fog. | | 30 | 30.413 | 28.8 | 30.419 | 30.2 | 20 | 27.5 | 30.0 | 23.8 | 30.0 | S | Overcast—light wind. | | 31 | 30.500 | 30.5 | 30.539 | 32.4 | 25 | 31.0 | 31.8 | 27.5 | 31.8 | E | A.M. Overcast. P.M. Fine. | **Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr.** | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum | |------|------|------|------|------|------|------|------|-----| | 30.109 | 37.8 | 30.099 | 38.5 | 31.5 | 34.1 | 36.2 | 31.4 | 36.6 | 0.102 | **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.