{ "id": "7ecb017bc57fb3a143aff653e4e8f024dc747ac5", "text": "METEOROLOGICAL JOURNAL,\n\nKEPT BY THE ASSISTANT SECRETARY\n\nAT THE APARTMENTS OF THE\n\nROYAL SOCIETY,\n\nBY ORDER OF\n\nTHE PRESIDENT AND COUNCIL.\n\nMDCCCXXXI.\n## METEOROLOGICAL JOURNAL FOR JANUARY, 1831.\n\n| 1831. Jan. | 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. |\n|------------|-----------------|-----------------|----------------------------------------|----------------------|----------------------------------|-----------------------------|----------|\n| | Barom. | Attach. Ther. | Barom. | Attach. Ther. | Fahrenheit. | Self-registering. | Lowest. Highest. |\n| h 1 | 29.766 | 38.7 | 29.782 | 41.2 | 34 | 34.6 | 42.3 |\n| o 2 | 29.856 | 40.3 | 29.843 | 41.6 | 36 | 38.2 | 39.3 |\n| d 3 | 29.904 | 39.7 | 29.896 | 40.9 | 38 | 38.4 | 39.8 |\n| g 4 | 29.908 | 40.3 | 29.867 | 40.2 | 37 | 37.3 | 37.5 |\n| y 5 | 29.830 | 40.3 | 29.875 | 40.8 | 37 | 37.7 | 39.2 |\n| u 6 | 30.197 | 38.8 | 30.301 | 40.0 | 35 | 35.3 | 38.5 |\n| f 7 | 30.592 | 36.5 | 30.580 | 37.0 | 29 | 31.0 | 32.4 |\n| h 8 | 30.584 | 33.6 | 30.499 | 35.2 | 27 | 27.5 | 33.8 |\n| o 9 | 30.254 | 34.3 | 30.114 | 36.3 | 31 | 31.7 | 38.9 |\n| d 10 | 29.897 | 38.9 | 29.892 | 39.8 | 40 | 40.9 | 40.8 |\n| g 11 | 30.082 | 36.7 | 30.051 | 37.8 | 33 | 33.7 | 35.2 |\n| y 12 | 30.080 | 38.2 | 30.041 | 39.0 | 37 | 37.7 | 38.7 |\n| u 13 | 30.120 | 38.3 | 30.128 | 39.3 | 33 | 34.7 | 38.2 |\n| f 14 | 30.172 | 41.3 | 30.130 | 41.9 | 37 | 39.4 | 38.3 |\n| h 15 | 29.989 | 39.3 | 29.898 | 38.2 | 32 | 32.6 | 32.4 |\n| o 16 | 29.817 | 37.7 | 29.771 | 37.7 | 32 | 32.5 | 33.7 |\n| d 17 | 29.605 | 39.4 | 29.565 | 40.6 | 40 | 40.7 | 43.2 |\n| g 18 | 29.552 | 40.3 | 29.554 | 41.9 | 38 | 38.7 | 43.2 |\n| y 19 | 29.652 | 43.6 | 29.625 | 45.0 | 45 | 45.3 | 46.6 |\n| u 20 | 29.411 | 44.6 | 29.273 | 45.5 | 42 | 42.3 | 43.6 |\n| f 21 | 29.131 | 45.5 | 29.091 | 47.0 | 42 | 42.6 | 47.8 |\n| h 22 | 29.218 | 48.3 | 29.204 | 49.2 | 47 | 47.7 | 48.5 |\n| o 23 | 29.325 | 49.0 | 29.385 | 49.2 | 47 | 47.3 | 44.5 |\n| d 24 | 29.488 | 42.7 | 29.502 | 41.2 | 32 | 35.7 | 35.5 |\n| g 25 | 29.802 | 38.8 | 29.881 | 39.3 | 30 | 30.5 | 34.2 |\n| y 26 | 29.085 | 34.2 | 30.132 | 35.8 | 22 | 28.7 | 32.6 |\n| u 27 | 29.939 | 33.6 | 29.522 | 36.0 | 21 | 29.7 | 38.8 |\n| f 28 | 29.650 | 37.6 | 29.656 | 38.4 | 27 | 33.0 | 35.0 |\n| h 29 | 29.874 | 36.2 | 29.857 | 37.0 | 26 | 32.5 | 33.5 |\n| o 30 | 29.833 | 34.6 | 29.834 | 36.1 | 20 | 30.0 | 32.3 |\n| d 31 | 29.727 | 33.7 | 29.628 | 36.2 | 27 | 30.5 | 33.8 |\n\n### Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr.\n\n| Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum |\n|------|------|------|------|------|------|------|------|-----|\n| 29.850 | 39.2 | 29.818 | 40.3 | 34.0 | 36.2 | 38.5 | 32.5 | 38.9 |\n\n---\n\n**OBSERVANDA.**\n\nHeight of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge = 83 feet 2½ in.\n\nabove the mean level of the Sea (presumed about) = 95 feet.\n\nThe External Thermometer is 2 feet higher than the Barometer Cistern.\n\nHeight of the Receiver of the Rain Gauge above the Court of Somerset House = 79 feet 0 in.\n\nThe hours of observation are of Mean Time, the day beginning at Midnight.\n\nThe Thermometers are graduated by Fahrenheit's Scale.\n\nThe Barometer is divided into inches and decimals.\n## METEOROLOGICAL JOURNAL FOR FEBRUARY, 1831.\n\n| 1831. Feb. | 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. |\n|------------|-----------------|-----------------|----------------------------------------|-----------------------|-----------------------------------|-----------------------------|----------|\n| | Barom. | Attach. Ther. | Barom. | Attach. Ther. | Fahrenheit. | Self-registering. | Lowest. Highest. | SSE |\n| 1 | 29.099 | 38.4 | 29.047 | 36.5 | 31 | 31.9 | 34.9 | ESE |\n| 2 | 29.173 | 35.3 | 29.126 | 37.8 | 32 | 34.4 | 36.0 | SSE |\n| 3 | 29.418 | 34.9 | 29.235 | 37.0 | 33 | 34.3 | 35.9 | S |\n| 4 | 28.954 | 41.3 | 29.204 | 41.2 | 42 | 42.3 | 38.3 | E |\n| 5 | 29.642 | 40.4 | 29.782 | 41.6 | 33 | 37.5 | 38.7 | W |\n| 6 | 29.888 | 37.6 | 29.775 | 40.3 | 30 | 31.8 | 37.7 | SSE |\n| 7 | 29.512 | 40.7 | 29.612 | 44.4 | 46 | 46.4 | 51.2 | SSW |\n| 8 | 29.893 | 46.5 | 29.918 | 49.5 | 51 | 51.3 | 52.8 | S |\n| 9 | 30.004 | 51.3 | 30.054 | 54.4 | 53 | 54.5 | 58.7 | SSW |\n| 10 | 30.234 | 53.4 | 30.231 | 55.2 | 47 | 52.6 | 57.8 | S |\n| 11 | 30.254 | 53.7 | 30.274 | 57.0 | 49 | 49.5 | 55.5 | SSW |\n| 12 | 30.292 | 53.7 | 30.289 | 55.2 | 50 | 50.3 | 52.8 | W |\n| 13 | 30.236 | 52.8 | 30.193 | 53.8 | 48 | 48.7 | 49.4 | SSE |\n| 14 | 30.237 | 51.5 | 30.229 | 53.0 | 45 | 46.5 | 48.6 | WSW |\n| 15 | 30.131 | 48.7 | 29.984 | 50.6 | 41 | 41.0 | 48.9 | ESE |\n| 16 | 29.893 | 49.7 | 29.956 | 52.5 | 46 | 46.7 | 52.0 | WSW |\n| 17 | 29.949 | 48.7 | 30.085 | 49.8 | 43 | 43.6 | 47.0 | NW |\n| 18 | 30.201 | 46.7 | 30.176 | 49.9 | 40 | 40.6 | 46.4 | W |\n| 19 | 30.045 | 45.0 | 30.030 | 48.5 | 43 | 43.8 | 45.7 | W |\n| 20 | 29.955 | 45.3 | 29.958 | 46.3 | 36 | 41.0 | 41.8 | NNW |\n| 21 | 30.053 | 41.4 | 30.045 | 44.5 | 32 | 36.8 | 42.0 | NNW |\n| 22 | 30.027 | 42.3 | 30.145 | 43.2 | 38 | 38.7 | 39.9 | SSW |\n| 23 | 30.403 | 41.3 | 30.354 | 43.8 | 37 | 38.5 | 41.6 | NNW |\n| 24 | 30.139 | 43.7 | 30.079 | 44.8 | 44 | 44.6 | 46.6 | W |\n| 25 | 29.824 | 46.7 | 29.780 | 48.3 | 44 | 44.6 | 45.8 | W |\n| 26 | 29.190 | 46.6 | 29.227 | 49.3 | 45 | 45.3 | 46.8 | WSW |\n| 27 | 29.272 | 43.2 | 29.220 | 48.6 | 41 | 41.7 | 50.3 | S |\n| 28 | 29.537 | 44.7 | 29.576 | 47.4 | 39 | 39.8 | 45.7 | WSW |\n\nMean Mean Mean Mean Mean Mean Mean Sum\n\n29.837 45.1 29.842 47.3 41.4 42.8 46.0 38.5 47.2 1.445\n\nMonthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ............... { 9 A.M. 3 P.M. }\n{ 29.802 29.860 }\n\n### OBSERVANDA.\n\nHeight of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge ...................... = 83 feet 2½ in.\n................................................................. above the mean level of the Sea (presumed about) .......... = 95 feet.\n\nThe external Thermometer is 2 feet higher than the Barometer Cistern.\n\nHeight of the Receiver of the Rain Gauge above the Court of Somerset House ..................... = 79 feet 0 in.\n\nThe hours of observation are of Mean Time, the day beginning at Midnight.\n\nThe Thermometers are graduated by Fahrenheit's Scale.\n\nThe Barometer is divided into inches and decimals.\n## METEOROLOGICAL JOURNAL FOR MARCH, 1831.\n\n| 1831. March | 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. |\n|-------------|-----------------|-----------------|----------------------------------------|----------------------|----------------------------------|-------------------------------|----------|\n| | Barom. | Attach. Therm. | Barom. | Attach. Therm. | Fahrenheit. | Self-registering. Lowest. Highest. | |\n| ☿ 1 | 29.844 | 40.1 | 29.897 | 45.4 | 38 | 38.8 | 46.5 | 34.5 | 46.5 | W | Fine and cloudless—light haze. |\n| ☿ 2 | 29.751 | 44.7 | 29.691 | 48.6 | 47 | 47.3 | 53.5 | 37.8 | 53.7 | 0.036 | WSW | Overcast. Light fog A.M. |\n| ☿ 3 | 29.622 | 49.7 | 29.641 | 52.5 | 51 | 51.4 | 54.0 | 46.6 | 54.3 | 0.075 | SW | ☿ A.M. Foggy—light rain. P.M. Overcast. |\n| ☿ 4 | 29.764 | 52.7 | 29.897 | 55.0 | 49 | 49.8 | 52.8 | 49.8 | 53.7 | 0.222 | NW | ☿ A.M. Foggy. P.M. Fine—light clouds and wind. |\n| ☿ 5 | 29.830 | 52.8 | 29.641 | 54.2 | 49 | 49.4 | 51.3 | 47.3 | 51.3 | SSW | Overcast—light wind. |\n| ☿ 6 | 29.154 | 53.2 | 29.161 | 54.3 | 51 | 51.3 | 51.3 | 48.6 | 51.8 | S var. | Lightly cloudy—light unsteady wind. |\n| ☿ 7 | 29.684 | 51.3 | 29.776 | 58.4 | 47 | 47.7 | 50.5 | 43.8 | 50.7 | NW | Fine and clear—light clouds. |\n| ☿ 8 | 29.753 | 48.6 | 29.594 | 52.5 | 45 | 45.3 | 50.8 | 38.3 | 51.4 | 0.022 | ESE | Cloudy—light wind and fog. |\n| ☿ 9 | 29.595 | 49.4 | 29.612 | 52.6 | 44 | 44.4 | 49.8 | 40.5 | 50.3 | SW | ☿ A.M. Fine and cloudless. P.M. Hail and rain with light wind. |\n| ☿ 10 | 29.926 | 46.8 | 29.938 | 50.7 | 39 | 39.7 | 50.6 | 35.3 | 50.6 | 0.061 | W | Fine and cloudless. |\n| ☿ 11 | 29.714 | 51.7 | 29.597 | 53.4 | 49 | 49.6 | 51.6 | 38.7 | 51.6 | 0.028 | SSE | Overcast—light rain and wind. |\n| ☿ 12 | 29.937 | 49.0 | 29.756 | 53.0 | 43 | 43.4 | 49.8 | 37.6 | 51.3 | WSW | ☿ A.M. Fine. P.M. Light rain and wind. |\n| ☿ 13 | 29.660 | 49.7 | 29.607 | 51.0 | 45 | 46.8 | 46.7 | 40.8 | 48.7 | WSW | ☿ Overcast. Heavy showers, with light brisk wind. |\n| ☿ 14 | 29.630 | 47.9 | 29.681 | 50.3 | 41 | 44.3 | 45.5 | 39.3 | 49.7 | 0.086 | WSW | Fine and clear—light clouds. Hall and rain P.M. |\n| ☿ 15 | 29.778 | 47.3 | 29.659 | 50.0 | 43 | 43.7 | 49.7 | 40.3 | 52.3 | 0.042 | SW | Light rain. |\n| ☿ 16 | 29.648 | 50.8 | 29.741 | 53.3 | 51 | 52.7 | 55.7 | 43.2 | 56.3 | 0.014 | W | Cloudy—light wind. |\n| ☿ 17 | 29.851 | 53.3 | 29.893 | 55.8 | 53 | 54.3 | 57.6 | 52.3 | 57.7 | SSW var.| Fine—cloudy. |\n| ☿ 18 | 30.184 | 52.3 | 30.196 | 55.4 | 52 | 46.3 | 50.8 | 40.3 | 41.0 | WNW | Fine and clear—light clouds. |\n| ☿ 19 | 30.217 | 49.7 | 30.172 | 53.5 | 42 | 43.8 | 51.0 | 37.7 | 51.5 | WSW | Fine—lightly cloudy. |\n| ☿ 20 | 30.112 | 49.6 | 30.072 | 52.7 | 43 | 44.7 | 52.7 | 41.8 | 52.7 | W | Lightly cloudy—light wind and fog. |\n| ☿ 21 | 30.092 | 51.4 | 30.097 | 54.2 | 49 | 49.5 | 54.4 | 44.3 | 54.4 | N | Overcast—hazy. |\n| ☿ 22 | 30.262 | 50.7 | 30.283 | 53.0 | 45 | 46.7 | 48.3 | 43.7 | 48.3 | 0.083 | ESE | Fine—light clouds. |\n| ☿ 23 | 30.369 | 46.9 | 30.297 | 47.8 | 34 | 42.4 | 42.3 | 37.7 | 44.6 | E | Fine—lightly cloudy—light brisk wind. |\n| ☿ 24 | 29.958 | 41.3 | 29.811 | 43.2 | 35 | 36.1 | 38.4 | 31.7 | 40.3 | ☿ Overcast—light brisk wind.—Snow A.M. |\n| ☿ 25 | 29.658 | 44.3 | 29.570 | 47.7 | 39 | 39.1 | 44.6 | 34.3 | 44.7 | E | Lightly cloudy—light wind. |\n| ☿ 26 | 29.345 | 45.3 | 29.429 | 49.8 | 43 | 43.7 | 54.3 | 40.3 | 54.7 | 0.061 | ☿ A.M. Showers, with fog and light wind. P.M. Fine. |\n| ☿ 27 | 29.906 | 51.4 | 29.941 | 53.7 | 51 | 51.7 | 53.3 | 42.6 | 59.4 | 0.153 | S | Fine and clear—light clouds. |\n| ☿ 28 | 30.056 | 51.3 | 30.053 | 55.3 | 47 | 47.7 | 56.7 | 42.3 | 59.4 | N | Fine and clear—light clouds.—Hazy A.M. |\n| ☿ 29 | 30.165 | 47.7 | 30.168 | 48.0 | 42 | 42.7 | 44.7 | 39.7 | 45.0 | N | Overcast—light wind. |\n| ☿ 30 | 30.281 | 45.3 | 30.277 | 49.6 | 35 | 41.6 | 48.2 | 38.5 | 49.7 | N | Overcast. Hazy A.M. |\n| ☿ 31 | 30.401 | 44.6 | 30.398 | 48.6 | 38 | 42.4 | 48.0 | 37.3 | 48.3 | N | Fine and clear. Clouds and haze A.M. |\n\nMean Mean Mean Mean Mean Mean Mean Mean Sum\n\n29.877 48.7 29.856 51.6 44.5 45.8 50.2 40.9 50.8 0.883\n\nMonthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ............... { 9 A.M. 3 P.M. } { 29.834 29.801 }\n\n### OBSERVANDA.\n\nHeight of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge ......................... = 83 feet 2½ in.\n\n.............................................................. above the mean level of the Sea (presumed about) .................. = 95 feet.\n\nThe External Thermometer is 2 feet higher than the Barometer Cistern.\n\nHeight of the Receiver of the Rain Gauge above the Court of Somerset House ......................... = 79 feet 0 in.\n\nThe hours of observation are of Mean Time, the day beginning at Midnight.\n\nThe Thermometers are graduated by Fahrenheit's Scale.\n\nThe Barometer is divided into inches and decimals.\n## METEOROLOGICAL JOURNAL FOR APRIL, 1831.\n\n| 1831. April | 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 9 A.M. | Direction of the Wind at 9 A.M. | Remarks |\n|-------------|-----------------|-----------------|----------------------------------------|----------------------|-------------------------------|-----------------------------|---------|\n| | Barom. | Attach. Ther. | Barom. | Attach. Ther. | Fahrenheit. | Self-registering. | |\n| | | | | | 9 A.M. | Lowest. | Highest. |\n| | | | | | 3 P.M. | | |\n| 1 | 30.448 | 45.9 | 30.335 | 48.3 | 37 | 44.0 | 45.7 | N | Cloudy—light wind. Rain at night. |\n| 2 | 30.071 | 44.7 | 30.025 | 47.2 | 37 | 41.3 | 44.7 | SE | Lightly cloudy. |\n| 3 | 29.963 | 46.3 | 29.853 | 50.2 | 43 | 44.3 | 51.3 | N | Lightly cloudy—light wind. |\n| 4 | 29.702 | 45.3 | 29.590 | 48.5 | 40 | 41.3 | 48.4 | N | Overcast—hazy. |\n| 5 | 29.503 | 45.3 | 29.468 | 49.2 | 40 | 42.7 | 49.5 | SSW | Cloudy—hazy. |\n| 6 | 29.504 | 49.7 | 29.468 | 52.1 | 43 | 47.3 | 54.5 | SW | Fine—lightly cloudy. |\n| 7 | 29.375 | 49.7 | 29.261 | 54.5 | 48 | 49.7 | 59.0 | ESE | Overcast—light wind. |\n| 8 | 29.284 | 52.3 | 29.306 | 52.8 | 49 | 50.7 | 48.6 | S | Overcast—light rain. |\n| 9 | 29.503 | 52.9 | 29.534 | 56.6 | 51 | 53.5 | 56.6 | SSE | Lightly cloudy. Light rain at night. |\n| 10 | 29.610 | 56.7 | 29.698 | 58.6 | 52 | 54.7 | 57.4 | S | Clear—lightly cloudy—light wind. |\n| 11 | 29.981 | 54.7 | 29.976 | 57.2 | 50 | 52.3 | 58.7 | N | Lightly overcast. |\n| 12 | 29.925 | 54.6 | 29.830 | 58.3 | 53 | 53.6 | 60.8 | NE | Fine—lightly cloudy. At 9½ P.M. Thunder and lightning, with rain. |\n| 13 | 29.820 | 57.7 | 29.794 | 61.6 | 57 | 57.6 | 63.8 | N | Lightly cloudy. |\n| 14 | 29.969 | 58.3 | 29.948 | 59.7 | 43 | 50.7 | 56.8 | N | Fine and clear—light clouds and wind. |\n| 15 | 30.015 | 57.3 | 29.985 | 58.3 | 46 | 52.7 | 55.8 | W | Lightly cloudy. |\n| 16 | 30.064 | 58.2 | 30.006 | 59.9 | 50 | 56.7 | 57.4 | N | Lightly cloudy. |\n| 17 | 29.989 | 55.4 | 29.994 | 57.7 | 49 | 49.7 | 52.3 | N | Cloudy—clear. Light rain A.M. |\n| 18 | 30.044 | 52.7 | 29.977 | 55.9 | 39 | 46.6 | 56.2 | N | Fine and clear—light clouds. |\n| 19 | 29.953 | 49.7 | 29.877 | 54.7 | 45 | 45.7 | 57.8 | N | Light wind.—A.M. overcast. P.M. Fine and clear. |\n| 20 | 29.815 | 55.3 | 29.720 | 55.9 | 41 | 48.6 | 56.2 | N | Fine—lightly cloudy. |\n| 21 | 29.533 | 51.4 | 29.453 | 54.3 | 47 | 47.7 | 53.4 | NNE | Overcast. |\n| 22 | 29.429 | 54.3 | 29.429 | 58.9 | 53 | 54.4 | 60.2 | E | Fine—lightly cloudy. |\n| 23 | 29.508 | 53.8 | 29.513 | 60.3 | 52 | 52.3 | 60.8 | NNW | A.M. Overcast. Noon, hail and rain. |\n| 24 | 29.825 | 56.7 | 29.873 | 57.3 | 50 | 52.6 | 54.7 | N | P.M. Fine. |\n| 25 | 30.005 | 56.7 | 29.960 | 60.3 | 51 | 54.7 | 62.8 | N | Overcast. |\n| 26 | 29.817 | 59.3 | 29.753 | 62.3 | 49 | 57.6 | 61.8 | E | Cloudy—light wind. |\n| 27 | 29.646 | 56.6 | 29.546 | 61.7 | 49 | 52.5 | 58.7 | SE | Lightly cloudy. |\n| 28 | 29.347 | 56.3 | 29.316 | 58.4 | 51 | 51.7 | 54.0 | S | Lowering—light wind and fog. Rain at 10 A.M. |\n| 29 | 29.203 | 56.3 | 29.216 | 61.3 | 50 | 50.5 | 61.0 | E | Overcast and foggy—deposition of moisture. |\n| 30 | 29.243 | 60.4 | 29.195 | 62.4 | 51 | 58.0 | 61.0 | S | A.M. Foggy. P.M. Fine—cloudy—brisk wind—showery. |\n| | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum | |\n| | 29.736 | 53.4 | 29.697 | 56.5 | 47.2 | 50.5 | 56.0 | 45.1 | 57.2 | 1.074 |\n\nMonthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ............... { 9 A.M. 3 P.M. } { 29.676 29.631 }\n\n### OBSERVANDA.\n\nHeight of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge......................... = 83 feet 2½ in.\n\n............................................................ above the mean level of the Sea (presumed about) .............. = 95 feet.\n\nThe External Thermometer is 2 feet higher than the Barometer Cistern.\n\nHeight of the Receiver of the Rain Gauge above the Court of Somerset House ......................... = 79 feet 0 in.\n\nThe hours of observation are of Mean Time, the day beginning at Midnight.\n\nThe Thermometers are graduated by Fahrenheit's Scale.\n\nThe Barometer is divided into inches and decimals.\n## METEOROLOGICAL JOURNAL FOR MAY, 1831.\n\n| 1831. May | 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. |\n|-----------|----------------|-----------------|----------------------------------------|----------------------|----------------------------------|-------------------------------|----------|\n| | Barom. | Attach. Therm. | Barom. | Attach. Therm. | Fahrenheit. | Self-registering. Lowest. Highest. | Rain. |\n| ○ 1 | 29.462 | 58.7 | 29.418 | 60.3 | 53 | 57.3 | 59.0 | 46.7 | 63.3 | 0.019 | SSW | Clear—cloudy—showery. |\n| △ 2 | 29.557 | 59.7 | 29.583 | 60.6 | 51 | 57.8 | 56.5 | 46.7 | 60.2 | 0.269 | E | Cloudy and foggy—showery. |\n| ○ 3 | 29.638 | 56.5 | 29.652 | 61.7 | 54 | 56.3 | 62.2 | 49.0 | 63.4 | 0.178 | SE | A.M. Cloudy—showers. P.M. Fine and clear—light brisk wind. |\n| ♀ 4 | 29.599 | 61.3 | 29.527 | 61.9 | 53 | 60.0 | 54.7 | 49.4 | 62.3 | 0.017 | SSW | A.M. Fine and clear. P.M. Overcast. |\n| △ 5 | 29.530 | 55.6 | 29.502 | 56.7 | 42 | 51.6 | 50.3 | 43.7 | 55.7 | WSW | Fine—lightly cloudy. |\n| ♀ 6 | 29.783 | 58.3 | 29.813 | 55.7 | 48.5 | 48.7 | 40.3 | 55.7 | 0.153 | NW var. | Cloudy—Fine and clear A.M. |\n| △ 7 | 30.026 | 50.4 | 30.063 | 54.3 | 44.7 | 50.3 | 33.8 | 54.5 | N | Fine—light clouds. |\n| ○ 8 | 30.264 | 55.3 | 30.276 | 55.2 | 38 | 50.4 | 51.3 | 36.7 | 52.3 | ENE | Cloudy—Fine A.M. |\n| △ 9 | 30.337 | 55.3 | 30.258 | 55.3 | 37 | 51.2 | 55.5 | 38.3 | 55.7 | NNE | Fine and clear.—Cloudless P.M. |\n| △ 10 | 30.215 | 51.3 | 30.162 | 55.7 | 47 | 47.5 | 54.4 | 43.5 | 54.6 | ESE | Cloudy—Light rain A.M. |\n| ♀ 11 | 30.201 | 56.7 | 30.197 | 56.5 | 45 | 53.8 | 57.5 | 38.8 | 58.5 | NE | Fine and clear—brisk wind. Cloudless P.M. |\n| △ 12 | 30.125 | 55.3 | 30.038 | 57.2 | 47 | 53.7 | 60.0 | 39.5 | 61.7 | NNE | Cloudless—hazy. |\n| ♀ 13 | 29.965 | 61.4 | 29.942 | 61.9 | 51 | 57.7 | 61.7 | 45.5 | 63.8 | NNE | A.M. Hazy. P.M. Fine and clear—light clouds. |\n| △ 14 | 30.088 | 56.8 | 30.077 | 58.7 | 32 | 50.0 | 52.3 | 41.7 | 55.4 | NNE | Lightly cloudy. |\n| ○ 15 | 30.058 | 58.5 | 30.010 | 59.9 | 35 | 53.5 | 62.6 | 39.4 | 63.7 | ENE | Fine—A.M. Lighthaze. P.M. Clear—light clouds. |\n| △ 16 | 30.132 | 59.7 | 30.141 | 61.6 | 43 | 56.7 | 65.7 | 44.4 | 67.3 | WSW | Fine—lightly overcast. |\n| △ 17 | 30.215 | 63.4 | 30.151 | 63.7 | 48 | 63.3 | 64.3 | 48.3 | 67.2 | ESE | Clear and cloudless. |\n| ♀ 18 | 30.036 | 66.5 | 29.964 | 65.6 | 49 | 63.7 | 66.4 | 50.5 | 66.5 | ENE | Clear and cloudless—light wind. |\n| △ 19 | 29.811 | 67.7 | 29.704 | 65.3 | 45 | 61.7 | 63.8 | 52.3 | 66.2 | E | Light wind. A.M. Cloudless. P.M. |\n| ♀ 20 | 29.832 | 68.2 | 29.830 | 66.9 | 55 | 65.7 | 66.7 | 56.3 | 71.5 | S | Cloudy—A.M. Fine and clear. A.M. Cloudy—showery. |\n| △ 21 | 29.912 | 61.9 | 29.943 | 68.0 | 57 | 57.4 | 66.7 | 53.6 | 67.6 | 0.086 | N | A.M. Overcast. P.M. Fine and clear—light clouds. |\n| ○ 22 | 30.001 | 62.3 | 29.991 | 64.5 | 53 | 57.5 | 61.7 | 53.0 | 66.6 | NNW | Lightly overcast. |\n| △ 23 | 29.892 | 62.3 | 29.842 | 67.7 | 58 | 58.7 | 70.7 | 52.3 | 73.2 | A.M. Overcast. P.M. Nearly cloudless. |\n| △ 24 | 29.840 | 64.3 | 29.817 | 69.7 | 60 | 60.5 | 69.7 | 55.7 | 72.6 | N | A.M. Overcast. P.M. Nearly cloudless. |\n| ♀ 25 | 29.860 | 65.9 | 29.846 | 70.8 | 60 | 64.7 | 71.7 | 54.6 | 72.5 | N | Fine and clear—light clouds and wind. |\n| ○ 26 | 29.849 | 57.7 | 29.804 | 66.8 | 55 | 57.6 | 67.3 | 51.5 | 69.2 | E | A.M. Overcast. P.M. Clear and cloudless. |\n| ♀ 27 | 29.792 | 60.7 | 29.790 | 65.3 | 52 | 52.7 | 63.7 | 50.6 | 64.8 | NNE | Lightly cloudy—light wind. |\n| △ 28 | 29.929 | 58.7 | 29.971 | 64.7 | 47 | 57.7 | 63.6 | 50.7 | 65.3 | N | Lightly cloudy. |\n| ○ 29 | 29.975 | 59.5 | 29.932 | 61.7 | 54 | 54.7 | 55.5 | 52.8 | 55.6 | E | Rain. |\n| △ 30 | 29.910 | 59.7 | 29.934 | 63.7 | 50 | 55.3 | 62.3 | 49.7 | 63.7 | 0.333 | NNE | A.M. Cloudy. P.M. Fine—light clouds. |\n| ♀ 31 | 29.997 | 63.7 | 29.942 | 63.4 | 50 | 61.3 | 62.3 | 51.3 | 63.6 | E | Fine and clear—light clouds. |\n\n**Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr.**\n\n\\[ \\text{Mean} = 29.930 \\]\n\n\\[ \\text{Mean} = 59.7 \\]\n\n\\[ \\text{Mean} = 29.907 \\]\n\n\\[ \\text{Mean} = 62.0 \\]\n\n\\[ \\text{Mean} = 49.0 \\]\n\n\\[ \\text{Mean} = 56.2 \\]\n\n\\[ \\text{Mean} = 62.2 \\]\n\n\\[ \\text{Mean} = 47.1 \\]\n\n\\[ \\text{Mean} = 63.0 \\]\n\n\\[ \\text{Sum} = 1,055 \\]\n\n---\n\n### OBSERVANDA.\n\nHeight of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge ......................... = 83 feet 2½ in.\n\n.......................................................... above the mean level of the Sea (presumed about) .............. = 95 feet.\n\nThe External Thermometer is 2 feet higher than the Barometer Cistern.\n\nHeight of the Receiver of the Rain Gauge above the Court of Somerset House ......................... = 79 feet 0 in.\n\nThe hours of observation are of Mean Time, the day beginning at Midnight.\n\nThe Thermometers are graduated by Fahrenheit's Scale.\n\nThe Barometer is divided into inches and decimals.\n## METEOROLOGICAL JOURNAL FOR JUNE, 1831.\n\n| 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. |\n|-----------------|-----------------|----------------------------------------|----------------------|-----------------------------------|-------------------------------|----------|\n| Barom. | Attach. Therm. | Barom. | Attach. Therm. | Fahrenheit. | Self-registering. | Lowest. Highest. Direction of the Wind at 9 A.M. Remarks. |\n| 1 | 29.937 | 66.8 | 29.981 | 66.4 | 52 | 61.7 64.7 49.6 67.3 NNE Fine and clear—light clouds and wind. |\n| 2 | 30.153 | 67.7 | 30.113 | 66.4 | 44 | 62.7 70.0 48.6 70.6 N Fine—light clouds and wind. |\n| 3 | 30.188 | 66.7 | 30.157 | 67.7 | 52 | 58.7 70.3 49.9 70.3 E Cloudless—hazy. |\n| 4 | 30.196 | 64.4 | 30.188 | 68.5 | 47 | 60.7 68.7 48.7 69.5 NNE Fine—light clouds and wind. |\n| 5 | 30.136 | 69.7 | 30.081 | 71.7 | 52 | 67.7 73.4 55.3 74.8 W Fine—clouds and haze—light wind. |\n| 6 | 30.081 | 65.3 | 30.078 | 65.6 | 43 | 57.4 59.4 51.3 60.3 0.025 N Rain P.M. Fine and clear—cloudy—light brisk wind. |\n| 7 | 30.074 | 60.4 | 30.007 | 63.3 | 42 | 54.3 58.4 49.9 61.3 NNW Cloudy—light wind. |\n| 8 | 29.847 | 65.7 | 29.826 | 66.9 | 52 | 61.0 67.3 49.5 67.6 NNW Fine—cloudy—light wind. |\n| 9 | 29.878 | 68.8 | 29.843 | 67.7 | 51 | 65.7 70.4 51.4 72.7 WSW Fine—light clouds. Light rain P.M. |\n| 10 | 29.752 | 73.4 | 29.771 | 69.1 | 52 | 65.6 67.4 57.5 70.7 0.047 W Fine—cloudy. |\n| 11 | 29.634 | 69.4 | 29.734 | 68.7 | 53 | 65.3 70.4 57.7 71.7 0.011 WSW Clear—cloudy—light showers and unsteady wind. |\n| 12 | 29.798 | 68.7 | 29.877 | 70.3 | 58 | 67.6 70.7 60.3 72.3 WSW Fair—lightly cloudy. |\n| 13 | 29.902 | 68.3 | 29.985 | 68.7 | 58 | 64.7 68.5 59.3 71.7 0.028 W Cloudy—light wind. Showers through the day. |\n| 14 | 30.173 | 69.4 | 30.137 | 69.6 | 58 | 66.7 72.6 57.7 73.7 0.289 W Clear and cloudless. |\n| 15 | 29.914 | 76.2 | 29.871 | 70.3 | 56 | 69.8 66.5 56.7 74.7 SSW A.M. Very clear. P.M. Light rain. |\n| 16 | 29.856 | 70.2 | 29.830 | 69.4 | 52 | 67.3 69.7 57.3 73.5 0.036 WSW Fine and clear—cloudy. |\n| 17 | 29.948 | 67.7 | 29.987 | 66.7 | 55 | 65.6 67.0 55.7 69.3 WSW Clear—cloudy—showery. |\n| 18 | 30.019 | 64.7 | 30.026 | 67.9 | 63 | 63.6 67.0 56.7 69.6 0.055 SSE var. A.M. Lowering—light wind. P.M. Clear—Cloudy. |\n| 19 | 29.970 | 69.7 | 30.023 | 70.0 | 56 | 67.6 71.0 60.7 73.3 SSW A.M. Cloudy—light wind. P.M. Cloudless. |\n| 20 | 30.205 | 68.7 | 30.205 | 69.7 | 50 | 67.8 71.5 53.4 73.4 W A.M. Very clear. P.M. Fine—cloudy. |\n| 21 | 30.226 | 73.4 | 30.175 | 71.5 | 53 | 69.7 75.3 55.6 75.7 S Fine and clear—nearly cloudless. |\n| 22 | 30.230 | 70.5 | 30.220 | 71.6 | 53 | 69.5 73.4 56.7 73.8 WSW Fine—light haze—cloudy. |\n| 23 | 30.232 | 70.4 | 30.180 | 71.3 | 57 | 67.7 71.0 58.5 72.7 NNE Fine—hazy. |\n| 24 | 29.941 | 65.8 | 29.854 | 67.7 | 55 | 61.3 66.7 57.8 68.7 0.103 WSW A.M. Rain. P.M. Fine and clear—light wind. |\n| 25 | 29.791 | 65.7 | 29.763 | 64.9 | 51 | 63.6 61.3 55.7 66.0 0.011 W Cloudy. Light showers P.M. |\n| 26 | 29.636 | 64.3 | 29.658 | 66.3 | 55 | 58.6 62.5 53.4 67.6 0.150 NNW Fine and clear—light unsteady wind. |\n| 27 | 29.928 | 69.6 | 29.850 | 66.3 | 55 | 66.7 64.6 51.7 69.4 0.128 WSW Light rain, morning and evening. |\n| 28 | 29.927 | 62.8 | 29.984 | 65.4 | 57 | 58.7 60.7 55.5 62.3 0.225 NE A.M. Fine—light clouds. P.M. Rain. |\n| 29 | 30.034 | 62.6 | 30.004 | 66.2 | 53 | 57.3 62.4 54.4 65.6 N Overcast. Light rain P.M. |\n| 30 | 30.006 | 61.7 | 30.023 | 66.3 | 56 | 57.7 65.4 54.6 66.3 0.047 NW Overcast—light wind. |\n\nMean Mean Mean Mean Mean Mean Mean Mean Sum\n\n29.987 67.6 29.981 68.1 53.0 63.7 67.6 54.7 69.9 1.052\n\nMonthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ............... { 9 A.M. 3 P.M. } { 29.884 29.877 }\n\n### OBSERVANDA.\n\nHeight of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge......................... = 83 feet 2½ in.\n\n..........................................................above the mean level of the Sea (presumed about) .......... = 95 feet.\n\nThe External Thermometer is 2 feet higher than the Barometer Cistern.\n\nHeight of the Receiver of the Rain Gauge above the Court of Somerset House................. .......... = 79 feet 0 in.\n\nThe hours of observation are of Mean Time, the day beginning at Midnight.\n\nThe Thermometers are graduated by Fahrenheit's Scale.\n\nThe Barometer is divided into inches and decimals.\nCHART of the BRITISH ISLES.\n\nTo accompany Mr. Lubbock's Paper on the TIDES.\n\nThe Roman Figures show the Time of High Water in Greenwich Time at new and full Moon.\nThe Italic ________ at the Place\n\nJ & C Walker Sculp.\nCHART OF THE WORLD,\n\nBetween the Latitudes of 60° N. and 55° S.\n\nTo accompany Mr. Lubbock's Paper on the TIDES.\n\nThe Roman Figures show the Time of High Water in Greenwich Time, at new and full Moon. 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