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

METEOROLOGICAL JOURNAL, KEPT BY THE ASSISTANT SECRETARY AT THE APARTMENTS OF THE ROYAL SOCIETY, BY ORDER OF THE PRESIDENT AND COUNCIL. MDCCCXXIX. ## METEOROLOGICAL JOURNAL FOR JULY, 1828. | 1828. 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 | 29.951 76.4 | 29.933 74.2 | 61 72.7 70.8 63.3 74.8 | SSW | Fine—partially lowering. | | 2 | 29.909 71.6 | 29.895 74.3 | 65 67.4 74.2 65.0 75.4 | SSW | Fine and clear—clouds. | | 3 | 29.935 72.8 | 29.922 74.8 | 63 70.3 76.8 65.2 78.7 | S | A.M. Light rain. P.M. Fine and clear—clouds. | | 4 | 29.865 73.4 | 29.899 76.7 | 70 72.7 74.3 67.6 77.5 | SW | A.M. Fine—light breeze. | | 5 | 29.908 78.3 | 29.875 76.2 | 59 72.7 74.9 65.2 77.3 | SW | A.M. Thunder at night. | | 6 | 29.884 74.4 | 29.894 74.4 | 59 69.5 70.2 60.8 73.7 | WSW | P.M. Overcast. | | 7 | 29.900 69.3 | 29.859 73.3 | 60 64.7 70.8 58.3 74.7 | SSE | Fine and clear—light clouds. | | 8 | 29.705 72.0 | 29.641 75.0 | 71 71.4 77.7 61.8 79.6 | ENE | Fine—cloudy. | | 9 | 29.545 67.8 | 29.583 69.8 | 66 66.0 66.4 63.6 67.8 | NW | Dark and overcast. Heavy showers. | | 10 | 29.688 63.1 | 29.817 69.3 | 56 60.0 70.9 56.7 72.7 | NNE | Distant thunder. | | 11 | 29.984 68.3 | 29.923 70.6 | 61 66.7 69.8 60.8 73.1 | SSW | A.M. Showery. P.M. Fine and clear. | | 12 | 29.532 65.5 | 29.499 66.2 | 62 62.2 61.4 60.8 64.5 | NW | Lowering. | | 13 | 29.442 61.7 | 29.497 65.7 | 57 57.3 63.7 55.4 65.2 | WSW | Overcast—light fog. Heavy showers. | | 14 | 29.563 70.6 | 29.521 66.8 | 51 64.0 65.6 52.9 68.5 | WSW | Brisk wind. A.M. Rain. P.M. Cloudy. | | 15 | 29.489 65.4 | 29.534 67.3 | 61 62.3 65.8 55.6 68.3 | S | Evening fine and clear. | | 16 | 29.768 61.3 | 29.806 68.8 | 59 59.0 73.7 53.7 74.8 | S | Fine and clear. Heavy showers. | | 17 | 29.702 66.2 | 29.691 70.3 | 63 65.6 72.6 59.5 74.2 | SSW | A.M. Lowering. P.M. Fine. Thunder, with heavy showers, at 1 P.M. | | 18 | 29.598 67.7 | 29.571 70.0 | 65 65.7 68.6 62.3 72.2 | ESE | Fine—cloudy. | | 19 | 29.565 69.0 | 29.601 70.3 | 57 67.7 69.6 59.3 71.6 | NNW | A.M. Cloudy—brisk wind. P.M. Fine, nearly cloudless. | | 20 | 29.417 64.7 | 29.254 67.7 | 60 62.3 66.1 56.8 66.8 | WSW | Cloudy and showery. Evening fine. | | 21 | 29.535 70.7 | 29.541 69.3 | 57 66.4 68.3 54.8 71.2 | ESE | Fine and very clear—light breeze. | | 22 | 29.551 64.7 | 29.615 69.2 | 57 62.9 69.4 52.8 71.6 | WSW | Cloudy—light wind. Heavy rain. | | 23 | 29.732 70.7 | 29.706 70.2 | 61 67.7 70.8 56.7 72.7 | WSW | Thunder & lightning at 4h 50m P.M. | | 24 | 29.652 65.9 | 29.615 68.8 | 62 62.3 66.0 59.8 70.7 | SSW | Fine and clear—light diffused clouds. | | 25 | 29.580 69.8 | 29.588 69.8 | 59 68.0 67.7 60.6 72.8 | SW | A.M. Cloudy—light fog. Showers. | | 26 | 29.767 70.8 | 29.745 70.2 | 59 69.2 67.7 57.4 70.6 | SW | Fine & clear—Showers & brisk wind. | | 27 | 29.797 70.7 | 29.832 68.8 | 57 64.8 66.4 54.8 68.3 | S | Fine—cloudy. | | 28 | 30.013 62.2 | 30.016 66.9 | 52 58.7 65.0 54.5 67.3 | N | Fine and clear—light wind. | | 29 | 29.921 67.3 | 29.868 66.7 | 50 62.5 64.0 54.2 67.6 | NNW | A.M. Fine & cloudless. P.M. Overcast. | | 30 | 29.923 63.6 | 29.952 64.8 | 49 59.8 61.9 46.8 63.8 | NNW | Fine—light clouds. | | 31 | 30.036 60.6 | 30.022 64.5 | 50 58.7 65.3 48.8 67.5 | W | Fine—light clouds. | **Mean** | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum | |------|------|------|------|------|------|------|------|------|-----| | 29.737 | 68.3 | 29.733 | 70.0 | 59.3 | 65.2 | 68.9 | 58.3 | 71.5 | 4,147 | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \{ 9 \text{ A.M.} \quad 3 \text{ P.M.} \} \] \[ \{ 29.648 \quad 29.640 \} \] ### OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge = 83 feet \( \frac{2}{3} \) 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. | 1828. 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. | WNW | Fine—light clouds—brisk wind. | | ♀ 1 | 29.938 64.5 | 29.954 66.5 | 53 64.1 66.1 56.7 68.8 0.075 | W | Fine—light clouds—brisk wind. | | ♂ 2 | 29.728 63.8 | 29.674 65.4 | 61 63.2 61.9 58.8 65.0 | SSW | Dark & cloudy—strong wind. Heavy showers. | | ○ 3 | 29.673 67.2 | 29.573 68.5 | 58 62.9 67.1 56.3 70.4 0.125 | SW | A.M. Fine—brisk wind. P.M. Heavy showers. | | ♀ 4 | 29.588 66.0 | 29.582 67.6 | 58 63.4 68.4 55.7 69.7 0.496 | W | Fine—light clouds. | | ♂ 5 | 29.628 67.2 | 29.633 69.1 | 54 64.1 69.3 54.5 72.9 0.100 | WNW | Fine and clear—light wind. | | ♀ 6 | 29.489 63.7 | 29.386 66.2 | 57 61.8 63.1 56.9 66.5 | SSE | Light rain continued. Thunder and lightning at 7h 10m P.M. | | ♀ 7 | 29.459 67.5 | 29.468 69.4 | 59 66.1 69.2 57.7 71.7 0.291 | SW | Fine—showery. Heavy rain at 8h P.M. | | ♀ 8 | 29.649 68.8 | 29.649 69.7 | 62 67.6 70.5 59.8 71.9 0.321 | SW | Fine—light clouds—brisk wind. | | ♂ 9 | 29.470 68.2 | 29.426 68.7 | 64 65.9 64.4 59.3 67.8 0.094 | SSW var. | Strong unsteady wind. A.M. Fine. P.M. Overcast. | | ♀ 10 | 29.658 68.7 | 29.656 68.5 | 58 66.3 67.4 56.7 69.3 | SSW | Fine & clear—showery. Strong wind. | | ♀ 11 | 29.792 67.7 | 29.699 67.6 | 54 65.3 67.9 56.1 68.4 0.035 | SW | Fine—light clouds. Evening, rain with strong wind. | | ♂ 12 | 29.822 65.8 | 29.843 68.4 | 61 63.4 68.7 56.3 69.3 0.258 | W | Fine—light clouds. P.M. Showery. | | ♀ 13 | 29.834 63.2 | 29.754 65.7 | 60 59.4 61.8 54.5 66.8 0.025 | NW | Cloudy—continued rain. | | ♀ 14 | 29.535 59.9 | 29.557 60.2 | 56 56.4 55.8 55.2 56.9 0.938 | NE | Strong fog—brisk wind. | | ♀ 15 | 29.858 57.9 | 29.910 63.0 | 50 56.4 61.7 50.1 63.9 0.063 | NW | Cloudy. Evening fine and clear. | | ♂ 16 | 29.973 63.4 | 29.956 62.8 | 55 55.1 66.3 50.3 67.6 | W | Fine—cloudy. | | ♀ 17 | 29.909 63.6 | 29.874 66.3 | 61 64.2 67.1 55.1 69.5 | SW | Cloudy—brisk wind. Light showers. | | ♀ 18 | 29.942 64.7 | 29.965 67.5 | 58 62.9 67.3 54.4 68.9 | WSW | Fine and clear—cloudy. | | ♂ 19 | 30.136 60.7 | 30.157 66.1 | 57 60.1 68.2 53.6 69.8 | W | Fine and clear—light clouds. | | ♀ 20 | 30.109 63.2 | 30.024 66.5 | 59 62.7 69.2 54.9 70.3 | S | Fine and clear—light clouds. | | ♀ 21 | 29.876 64.9 | 29.808 66.7 | 57 63.3 63.5 58.0 65.9 0.035 | SW | A.M. Fine. P.M. Lowering—light rain. | | ♀ 22 | 29.724 60.7 | 29.736 64.3 | 59 58.6 63.1 53.1 64.3 0.035 | WSW | Fine—cloudy. Showers. | | ♂ 23 | 30.047 60.4 | 30.103 64.8 | 57 59.8 65.1 52.0 66.1 0.086 | NW | A.M. Fine and clear. P.M. Overcast. | | ♀ 24 | 30.211 59.3 | 30.196 65.5 | 53 60.4 70.2 49.8 71.8 | W | Fine—nearly cloudless. | | ♀ 25 | 30.315 66.9 | 30.313 70.3 | 66 67.5 72.2 60.9 74.5 | NW | Overcast. | | ♂ 26 | 30.355 64.8 | 30.328 68.7 | 63 62.9 69.5 58.8 70.9 | SE | A.M. Overcast. P.M. Fine & cloudless. | | ♀ 27 | 30.315 63.1 | 30.280 67.1 | 62 63.5 69.2 54.0 70.7 | E | Fine and cloudless. | | ♀ 28 | 30.225 64.4 | 30.200 68.6 | 64 63.6 71.7 57.9 72.7 | E | Cloudless and very clear. | | ♀ 29 | 30.202 64.5 | 30.184 69.1 | 63 63.2 69.8 57.6 71.4 | NNE | A.M. Cloudy—brisk wind. P.M. Fine. | | ♂ 30 | 30.196 65.1 | 30.170 69.8 | 64 63.5 67.9 59.8 70.5 | NNE | Fine—cloudy. | | ♀ 31 | 30.113 62.8 | 30.041 64.7 | 58 60.1 61.8 56.9 62.2 | NNE | Lowering—brisk wind. | Mean 29.894 Mean 64.3 Mean 29.874 Mean 66.9 Mean 58.7 Mean 62.5 Mean 66.6 Mean 55.9 Mean 68.6 Sum 2,942 Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ...............{ 9 A.M. 3 P.M. } { 29.815 29.780 } 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. | 1828. Septemb. | 9 o'clock, A.M. | 3 o'clock P.M. | 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. | Dew Point at 9 A.M. in degrees of Fahr. | Fahrenheit. Self-registering. | Lowest. Highest. | NE | | D 1 | 30.011 61.9 | 29.982 65.5 | 59 60.0 | 65.2 57.0 | 68.1 | A.M. Lowering. P.M. Fine—cloudy. | | F 2 | 30.049 62.8 | 30.047 66.0 | 56 61.3 | 66.1 54.9 | 67.6 | A.M. Fine and clear—light breeze. | | G 3 | 30.077 59.5 | 30.075 64.4 | 57 57.7 | 64.1 54.2 | 64.6 | P.M. Overcast. | | H 4 | 30.065 62.1 | 30.012 65.2 | 55 61.5 | 64.4 55.9 | 68.1 | Dark and cloudy. | | I 5 | 30.023 60.7 | 30.010 64.0 | 58 58.5 | 64.3 54.4 | 65.4 | A.M. Fine and clear. P.M. Overcast. | | J 6 | 30.090 58.9 | 30.053 64.8 | 58 58.0 | 65.1 51.6 | 63.1 | Fine—cloudy. | | K 7 | 30.049 64.6 | 30.039 67.2 | 61 64.4 | 70.1 58.1 | 73.0 | Fine and clear—light clouds. | | L 8 | 29.976 67.2 | 29.872 69.4 | 61 67.7 | 72.1 60.5 | 73.9 | Fine and very clear—light wind. | | M 9 | 29.864 68.3 | 29.907 70.5 | 64 66.4 | 69.9 62.9 | 72.6 | Clear & cloudless. Heavy rain at night. | | N 10 | 29.802 67.0 | 29.599 68.1 | 66 66.2 | 65.6 57.8 | 67.9 | A.M. Cloudy. P.M. Fine and clear. | | O 11 | 29.612 67.7 | 29.598 69.0 | 64 64.9 | 67.3 58.9 | 68.5 | Lowering. Heavy rain P.M. | | P 12 | 29.473 65.0 | 29.431 68.5 | 64 62.4 | 67.8 61.3 | 68.6 | A.M. Fine. P.M. Heavy showers & strong wind. | | Q 13 | 29.605 65.2 | 29.641 67.8 | 62 62.9 | 65.9 57.1 | 67.8 | A.M. Heavy rain. P.M. Fine and clear—brisk wind. | | R 14 | 29.956 55.6 | 30.031 59.1 | 53 53.2 | 55.4 48.9 | 56.1 | Fine and clear. Heavy rain in the evening. | | S 15 | 30.304 55.4 | 29.400 61.2 | 49 55.0 | 60.1 48.5 | 62.7 | Lowering. Light rain P.M. | | T 16 | 30.576 52.8 | 30.550 58.2 | 47 51.7 | 58.9 44.9 | 59.6 | Fine and clear—light clouds. | | U 17 | 30.382 53.9 | 30.261 59.4 | 52 54.2 | 60.2 45.7 | 61.9 | Fine and clear—brisk wind. | | V 18 | 30.038 58.2 | 30.014 61.8 | 54 58.2 | 62.7 53.4 | 63.7 | Fine and cloudless. | | W 19 | 30.081 56.1 | 30.103 61.9 | 55 55.5 | 65.8 49.4 | 66.0 | Clear and cloudless. | | X 20 | 30.207 55.8 | 30.190 62.1 | 52 55.1 | 63.8 47.3 | 65.7 | Fine and clear. Strong fog A.M. | | Y 21 | 30.133 57.1 | 30.067 62.2 | 55 56.2 | 63.1 48.7 | 64.1 | Fine and clear. | | Z 22 | 29.981 58.5 | 29.964 62.1 | 57 58.2 | 65.0 52.1 | 65.5 | Fine—cloudy. | | A 23 | 30.128 59.3 | 30.128 64.4 | 57 57.8 | 66.1 54.4 | 67.0 | A.M. Cloudy. P.M. Fine. | | B 24 | 30.178 62.2 | 30.087 65.1 | 61 62.8 | 64.9 55.0 | 67.9 | A.M. Fine. P.M. Overcast. | | C 25 | 29.956 64.2 | 29.891 66.2 | 61 62.9 | 68.1 57.8 | 69.2 | Fine & nearly cloudless—light breeze. | | D 26 | 29.810 64.9 | 29.796 68.1 | 63 63.8 | 71.1 58.9 | 72.8 | Fine and clear—light clouds. | | E 27 | 29.883 60.7 | 29.829 61.5 | 57 57.3 | 59.0 56.2 | 60.4 | A.M. Heavy rain. P.M. Fine. | | F 28 | 29.813 60.1 | 29.737 64.6 | 57 58.2 | 63.7 49.7 | 64.8 | A.M. Fine and clear. P.M. Heavy showers. | | G 29 | 29.578 63.8 | 29.537 66.1 | 62 62.7 | 65.0 57.6 | 66.8 | Lowering—boisterous wind. Heavy rain P.M. | | H 30 | 29.703 60.2 | 29.684 64.2 | 56 57.8 | 60.8 52.9 | 65.4 | Fine and clear—light clouds. | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \text{Mean} = \frac{29.980 + 61.0 + 29.918 + 64.6 + 57.8 + 59.7 + 64.7 + 54.2 + 66.4}{9} = 29.909 \] \[ \text{Mean} = \frac{29.820}{3} = 29.820 \] **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 6 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. | 1828, 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. Therm. | Barom. Attach. Therm. | Fahrenheit. Self-registering. Lowest. Highest. | 9 A.M. 3 P.M. | 9 A.M. 3 P.M. | WSW | A.M. Lowering. P.M. Fine & clear. | | 1 | 29.603 58.9 | 29.629 61.2 | 55 55.1 58.1 50.8 59.9 0.101 | SW | Fine—cloudy. | | 2 | 29.831 53.9 | 29.879 59.6 | 51 51.8 59.1 47.1 60.9 | SSE | Fine and nearly cloudless. Dense fog A.M. | | 3 | 29.946 50.4 | 29.861 58.2 | 47 47.1 58.1 44.2 60.2 | S | A.M. Dark and hazy. P.M. Fine—cloudy. | | 4 | 29.556 58.1 | 29.604 61.5 | 56 56.7 61.9 46.6 63.3 0.013 | SSE | Fine—cloudy. | | 5 | 29.607 58.3 | 29.566 61.2 | 57 57.4 61.1 51.3 62.7 | SW | Fine and clear—light wind. | | 6 | 29.364 58.5 | 29.461 61.3 | 55 56.7 59.0 52.8 62.2 0.333 | SW | Fine and clear—light clouds. | | 7 | 29.646 56.6 | 29.569 60.8 | 53 54.7 59.8 48.7 60.7 | W | Fine and clear—light clouds. | | 8 | 29.560 55.7 | 29.631 59.6 | 53 54.8 57.7 50.2 59.4 0.011 | WSW | Fine—cloudy. | | 9 | 29.994 55.0 | 30.076 58.8 | 51 53.5 58.3 47.8 58.7 | WNW | Fine—light clouds. | | 10 | 30.163 54.7 | 30.102 58.3 | 52 55.3 58.8 46.3 59.3 | SW | Fine—cloudy. | | 11 | 30.325 55.4 | 30.381 59.6 | 52 53.7 60.3 49.3 61.1 | W | A.M. Fine—light haze. P.M. Cloudy. | | 12 | 30.449 56.7 | 30.449 60.3 | 55 55.7 62.0 50.3 63.0 | SW | Clear and cloudless. | | 13 | 30.415 53.0 | 30.347 59.4 | 50 50.7 63.1 47.2 63.4 | SW | A.M. Fine—hazy. P.M. Cloudy. | | 14 | 30.381 57.2 | 30.374 59.6 | 54 54.7 58.2 50.5 58.5 | N | Fine—cloudy. | | 15 | 30.378 52.7 | 30.329 56.9 | 50 50.0 54.7 46.0 55.6 | NW | Cloudy and hazy. | | 16 | 30.336 54.3 | 30.297 56.8 | 50 52.8 55.0 49.7 54.8 | N | Hazy. | | 17 | 30.170 54.3 | 30.118 57.7 | 52 54.3 57.4 50.4 57.4 | WNW | Cloudy. | | 18 | 30.322 50.0 | 30.310 55.3 | 40 47.8 52.7 43.8 54.0 | NNE | Fine and nearly cloudless—hazy. | | 19 | 30.234 50.0 | 30.156 55.7 | 43 49.0 51.7 43.8 51.7 | SE | Fine and cloudless—light haze. | | 20 | 30.125 44.3 | 30.119 50.5 | 41 42.8 51.9 37.7 51.9 | NNE | A.M. Strong haze. P.M. Fine—cloudy. | | 21 | 30.135 50.3 | 30.085 53.6 | 47 47.7 55.8 42.2 57.3 | S | A.M. Dense fog. P.M. Fine—partially overcast. | | 22 | 29.908 54.7 | 29.852 58.4 | 55 57.2 61.0 47.2 62.2 | S | A.M. Fine & cloudless. P.M. Cloudy. | | 23 | 29.734 58.4 | 29.822 56.3 | 55 55.3 52.7 55.0 55.3 0.014 | NNW | A.M. Foggy—light wind. P.M. Rain. | | 24 | 30.152 47.8 | 30.152 54.2 | 43 44.8 52.2 40.3 52.2 0.222 | WSW | Fine and cloudless—hazy. | | 25 | 30.223 52.4 | 30.260 55.6 | 48 50.3 55.0 44.2 55.4 | SE | Fine and cloudless. | | 26 | 30.296 47.2 | 30.226 51.0 | 41 41.8 51.6 40.5 51.6 | S | A.M. Cloudless—strong haze. P.M. Light rain. | | 27 | 30.198 51.6 | 30.233 54.0 | 49 50.2 52.6 41.2 53.3 0.028 | N | Cloudy and foggy. | | 28 | 30.442 52.3 | 30.449 53.7 | 50 51.0 51.0 48.8 51.7 0.055 | NNE | A.M. Foggy. P.M. Cloudless—light wind. | | 29 | 30.460 46.3 | 30.382 51.4 | 44 44.7 52.8 39.3 52.8 | N | Fine and cloudless—hazy. | | 30 | 30.302 46.3 | 30.288 48.8 | 41 43.8 47.0 41.3 48.2 | NNE | Fine—light clouds—hazy. | | 31 | 30.282 42.3 | 30.250 47.7 | 41 42.6 48.3 36.5 48.3 | W | A.M. Strong haze. P.M. Fine—light clouds. | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ................. { 9 A.M. 3 P.M. } { 30.033 30.014 } **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. | 1828. 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. Ther. | Barom. | Attach. Ther. | Fahrenheit. | Self-registering. | | | h 1 | 30.274 | 48.0 | 30.222 | 50.4 | 46 | 48.3 | 51.6 | 41.8 | 51.8 | WSW | Cloudy and hazy. | | ⊙ 2 | 30.243 | 49.2 | 32.247 | 51.6 | 45 | 48.3 | 53.3 | 46.6 | 53.3 | WSW | Cloudy. | | D 3 | 30.348 | 49.6 | 30.317 | 52.0 | 46 | 46.5 | 51.7 | 44.3 | 51.7 | N | A.M. Strong haze. P.M. Fine—cloudy | | ⊙ 4 | 30.247 | 46.7 | 30.196 | 51.5 | 44 | 44.4 | 50.2 | 40.7 | 51.4 | NE | Fine—A.M. Strong haze. P.M. Light clouds. | | ⊙ 5 | 30.170 | 46.7 | 30.162 | 49.7 | 42 | 42.7 | 48.5 | 39.3 | 48.5 | ESE | Fine—light clouds. | | ⊙ 6 | 30.121 | 47.3 | 30.082 | 48.7 | 45 | 45.4 | 48.4 | 39.6 | 48.4 | ESE | A.M. Fine. P.M. Overcast. | | ⊙ 7 | 30.029 | 48.7 | 29.937 | 49.7 | 45 | 45.2 | 46.4 | 43.7 | 47.2 | E | Fine and cloudless. Haze and light wind P.M. | | h 8 | 29.935 | 41.1 | 29.879 | 41.3 | 27 | 36.3 | 37.6 | 34.8 | 38.2 | ESE | Overcast—light wind. | | ⊙ 9 | 29.699 | 39.6 | 29.648 | 43.7 | 37 | 37.5 | 44.4 | 33.7 | 44.4 | N | Dull—haze and light wind. | | D 10 | 29.511 | 40.3 | 29.458 | 41.5 | 38 | 37.7 | 38.8 | 35.3 | 39.1 | N | Strong fog. | | ⊙ 11 | 29.550 | 36.4 | 29.560 | 38.3 | 30 | 31.6 | 34.2 | 29.7 | 34.2 | NW | Strong haze. | | ⊙ 12 | 29.597 | 30.8 | 29.589 | 35.6 | 26 | 27.4 | 36.7 | 25.7 | 40.6 | N | Very dense fog. | | ⊙ 13 | 29.666 | 37.8 | 29.661 | 42.0 | 41 | 41.5 | 49.3 | 26.3 | 49.7 | S | Fine and clear—light clouds. | | ⊙ 14 | 29.510 | 43.8 | 29.364 | 45.3 | 43 | 44.1 | 46.2 | 40.8 | 48.7 | E | Foggy—light rain. | | h 15 | 29.351 | 47.3 | 29.361 | 48.8 | 47 | 49.4 | 50.8 | 43.7 | 51.5 | E | A.M. Light rain. P.M. Fine & clear. | | ⊙ 16 | 29.284 | 50.4 | 29.237 | 52.3 | 51 | 51.8 | 52.3 | 48.9 | 53.3 | SSE | Showers with boisterous wind. | | D 17 | 29.645 | 50.7 | 29.718 | 49.0 | 48 | 48.7 | 49.8 | 46.8 | 49.8 | NW | Light clouds—hazy. | | ⊙ 18 | 29.931 | 49.3 | 29.987 | 50.8 | 45 | 45.0 | 47.0 | 42.5 | 47.3 | WSW | Fine—hazy. | | ⊙ 19 | 29.983 | 48.8 | 30.144 | 50.4 | 45 | 47.4 | 48.6 | 40.8 | 49.2 | SSE | A.M. Cloudy—light wind. P.M. Fine. | | ⊙ 20 | 30.143 | 48.2 | 30.084 | 51.7 | 48 | 48.6 | 51.8 | 43.4 | 52.3 | WNW | Overcast. | | ⊙ 21 | 29.971 | 53.0 | 29.918 | 54.8 | 50 | 52.8 | 54.7 | 47.8 | 55.8 | WSW | A.M. Cloudy—light wind. P.M. Fine & clear. | | h 22 | 29.860 | 54.2 | 29.861 | 54.9 | 51 | 51.8 | 52.8 | 48.1 | 53.7 | S | Cloudy. Light rain P.M. | | ⊙ 23 | 30.013 | 47.8 | 29.889 | 52.3 | 42 | 42.8 | 50.3 | 40.3 | 50.7 | WSW | Fine and cloudless—light haze. | | D 24 | 29.715 | 51.7 | 29.729 | 53.6 | 49 | 49.3 | 51.3 | 41.9 | 51.9 | SSE | A.M. Fine. P.M. Overcast. | | ⊙ 25 | 29.929 | 51.7 | 29.940 | 53.9 | 49 | 49.2 | 53.0 | 45.9 | 53.3 | S | Fine and cloudless—light haze. | | ⊙ 26 | 29.890 | 53.8 | 29.878 | 55.6 | 53 | 53.4 | 54.8 | 48.2 | 55.8 | SSW | Cloudy—light wind. Rain P.M. | | ⊙ 27 | 29.994 | 52.9 | 30.097 | 55.3 | 47 | 47.7 | 52.6 | 46.3 | 55.4 | 0.125 | WSW | Fine—light clouds and haze. | | ⊙ 28 | 30.095 | 56.4 | 30.106 | 58.6 | 55 | 55.7 | 57.5 | 47.0 | 58.4 | SSW | A.M. Overcast. P.M. Fine. | | h 29 | 30.129 | 56.7 | 30.102 | 58.7 | 54 | 55.7 | 56.3 | 50.7 | 57.8 | SW | A.M. Cloudy. P.M. Fine. | | ⊙ 30 | 30.146 | 55.8 | 30.071 | 57.1 | 52 | 52.4 | 53.7 | 49.2 | 54.4 | SW | Overcast. | Mean Mean Mean Mean Mean Mean Mean Mean Sum 29.899 47.8 29.881 50.0 44.7 46.0 49.2 41.8 49.9 0.809 Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. .............. { 9 A.M., 3 P.M. } { 29.863 29.839 } 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. | Decemb. | Barom. | Attach. Therm. | Barom. | Attach. Therm. | 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 | |---------|--------|----------------|--------|----------------|----------------------------------------|---------------------|----------------------------------|-------------------------------|----------| | 1828. | | | | | | | | | NW | | 1 | 29.828 | 54.3 | 30.046 | 49.8 | 42 | 49.3 | 44.5 | 48.3 | Fine and clear—light wind. | | 2 | 30.455 | 44.7 | 30.367 | 45.4 | 25 | 37.4 | 39.7 | 33.8 | Fine—light clouds. | | 3 | 30.170 | 44.8 | 30.108 | 47.3 | 41 | 43.0 | 49.0 | 36.3 | A.M. Fine—brisk wind. P.M. Overcast; Light clouds—foggy. | | 4 | 30.199 | 48.8 | 30.217 | 50.7 | 50 | 50.4 | 53.1 | 42.3 | SSE | | 5 | 30.185 | 51.1 | 30.088 | 51.8 | 50 | 50.7 | 48.7 | 50.7 | Overcast and foggy. | | 6 | 29.932 | 49.0 | 29.869 | 51.2 | 46 | 46.5 | 50.8 | 40.3 | S | | 7 | 29.590 | 51.7 | 29.690 | 52.8 | 50 | 50.4 | 50.8 | 45.7 | Fine and cloudless. Strong wind early A.M. Thunder with rain at night. | | 8 | 29.389 | 50.4 | 29.200 | 50.8 | 46 | 46.9 | 46.7 | 47.7 | SW | | 9 | 29.668 | 44.9 | 29.833 | 47.8 | 39 | 39.8 | 42.7 | 37.4 | SW | | 10 | 30.160 | 45.7 | 30.149 | 48.0 | 43 | 44.3 | 46.7 | 37.8 | WSW | | 11 | 29.953 | 49.8 | 30.141 | 51.8 | 49 | 50.7 | 50.8 | 43.8 | SSSW | | 12 | 30.388 | 48.6 | 30.349 | 51.7 | 46 | 46.4 | 51.7 | 41.6 | A.M. Cloudy. P.M. Fine and clear. | | 13 | 30.380 | 52.3 | 30.379 | 53.8 | 50 | 50.8 | 52.6 | 45.8 | SW | | 14 | 30.444 | 52.0 | 30.401 | 52.1 | 48 | 48.3 | 47.0 | 47.3 | ESE | | 15 | 30.288 | 46.3 | 30.219 | 47.8 | 41 | 41.3 | 45.0 | 39.3 | ESE | | 16 | 30.106 | 50.0 | 30.039 | 51.2 | 46 | 48.4 | 49.2 | 40.2 | SSE | | 17 | 29.856 | 51.8 | 29.836 | 53.2 | 50 | 50.2 | 52.3 | 47.0 | A.M. Fine—cloudy. P.M. Overcast. | | 18 | 29.446 | 54.5 | 29.573 | 55.3 | 55 | 55.3 | 51.6 | 49.2 | SSSW | | 19 | 29.745 | 50.3 | 29.878 | 52.3 | 45 | 46.4 | 49.8 | 42.0 | SW | | 20 | 29.999 | 52.8 | 30.011 | 54.0 | 51 | 52.2 | 53.4 | 45.3 | WSW | | 21 | 30.088 | 54.0 | 30.071 | 55.3 | 52 | 52.7 | 55.0 | 51.3 | NNW | | 22 | 30.120 | 54.3 | 30.046 | 55.8 | 51 | 52.3 | 54.7 | 50.7 | WSW | | 23 | 29.970 | 53.8 | 29.884 | 55.0 | 51 | 50.9 | 51.4 | 48.8 | SW | | 24 | 29.676 | 52.4 | 29.570 | 53.8 | 47 | 47.7 | 51.3 | 46.4 | WSW | | 25 | 29.446 | 49.7 | 29.484 | 51.0 | 45 | 45.0 | 45.7 | 43.7 | SW | | 26 | 29.590 | 45.0 | 29.561 | 47.8 | 38 | 38.6 | 43.0 | 35.8 | A.M. Foggy. P.M. Fine—lightly overcast. | | 27 | 29.682 | 44.3 | 29.744 | 45.8 | 39 | 39.0 | 42.3 | 36.8 | S | | 28 | 29.887 | 44.6 | 29.967 | 46.3 | 39 | 39.8 | 44.6 | 38.0 | A.M. Strong fog. P.M. Overcast—rain. | | 29 | 30.346 | 44.7 | 30.382 | 45.0 | 41 | 41.4 | 40.6 | 39.3 | A.M. Strong white fog. P.M. Overcast. | | 30 | 30.377 | 42.3 | 30.312 | 45.9 | 40 | 40.7 | 44.7 | 34.5 | ESE | | 31 | 30.064 | 45.7 | 29.959 | 47.0 | 43 | 44.4 | 47.4 | 39.8 | SSW | | | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Mean | Sum | | | 29.981 | 49.2 | 29.980 | 50.6 | 45.1 | 46.5 | 48.3 | 42.6 | 49.2 | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. ................. { 9 A.M. 29.942 } { 3 P.M. 29.936 } **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.