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. MDCCCXXVII. ## METEOROLOGICAL JOURNAL for January, 1826. | 1826 January | Time. | Barometer corrected. | Therm. without. | Degree of Moisture by Daniell's Hygrom. | Sixe's Therm. | Rain. | Winds. | Weather. | |--------------|-------|----------------------|-----------------|----------------------------------------|---------------|-------|--------|----------| | | H. M. | Inches. | | | | | | | | 1 | 9 | 29,742 | 36 | 936 | 31 | 0.070 | E | Rain. | | | 4 | 29,695 | 40 | 857 | 41 | | E | Cloudy. | | 2 | 9 | 29,798 | 39 | 794 | 38 | | E | Cloudy. | | | 3 | 29,768 | 39 | | 41 | | E | Fine. | | 3 | 9 | 29,817 | 33 | 893 | 31 | | E | Fine. | | | 9 | 29,835 | 36 | 806 | 38 | | E | Fine. | | 4 | 9 | 29,877 | 35 | 867 | 33 | | E | Hazy. | | | 3 | 29,840 | 36 | 871 | 36 | | E | Cloudy. | | 5 | 9 | 29,844 | 35 | 900 | 35 | | E | Cloudy and dark. | | | 3 | 29,805 | 35 | 933 | 36 | | E | Rain. | | 6 | 9 | 29,712 | 36 | 903 | 35 | | E | Rain. | | 7 | 9 | 29,778 | 36 | 968 | 35 | 0.055 | E | Cloudy and hazy. | | | 3 | 29,779 | 35 | 967 | 36 | | E | Cloudy. | | 8 | 9 | 29,892 | 33 | 786 | 31½ | | E | Fine. | | | 3 | 29,948 | 31 | No deposition at 15° | 33 | | E | Cloudy. | | 9 | 9 | 29,987 | 28 | 612 | 25 | | E | Fine. | | | 3 | 29,963 | 28 | 569 | 30 | | E | Fine. | | 10 | 9 | 29,797 | 24 | 77½ | 33½ | | NE | Hazy. | | | 4 | 29,676 | 30 | 760 | 32 | | NNW | Fine. | | 11 | 9 | 29,665 | 30 | 910 | 29 | | N | Snow. | | | 4 | 29,704 | 33 | 786 | 32 | | N | Fine. | | 12 | 9 | 29,755 | 24 | 799 | 21 | | NNW | Dark and foggy. | | | 3 | 29,773 | 31 | 702 | 32½ | | W | Hazy. | | 13 | 8 | 29,906 | 21 | 788 | 20 | | W | Hazy. | | 14 | | | | | | | | | | 15 | 10 | 30,216 | 24 | 890 | 19½ | | N | Hazy. | | | 4 | 30,282 | 28 | 745 | 29 | | NE | Hazy. | | 16 | 9 | 30,439 | 17 | 772 | 16 | | E | Thick fog. | | | 5 | 30,529 | 28 | 936 | 28 | | E | Cloudy and hazy. | ## METEOROLOGICAL JOURNAL for January, 1826. | 1826 January | Time | Barometer corrected. | Therm. without. | Degree of Moisture by Daniell's Hygrom. | Sixe's Therm. | Rain. | Winds. | Weather. | |--------------|------|---------------------|-----------------|----------------------------------------|---------------|-------|--------|----------| | | H. M.| Inches. | | | | | | | | δ 17 | 9 o | 30,552 | 24 | 963 | 22 | E | I | Fine, rather hazy. | | | 4 o | 30,542 | 31 | 846 | 32 | SE | I | Fine. | | χ 18 | 9 o | 30,403 | 30 | 904 | 28 | S | I | Cloudy. | | | 3 o | 30,341 | 36 | 734 | 37 | S | I | Fine. | | η 19 | 9 30| 30,078 | 41 | 849 | 34 | N | I | Cloudy and hazy. | | | 3 o | 30,030 | 42 | 842 | 43 | N | I | Fine. | | ρ 20 | 9 o | 30,349 | 37 | 916 | 36 | N | I | Cloudy and dark fog. | | | 3 o | 30,144 | 40 | 886 | 41 | WNW | I | Cloudy. | | η 21 | 9 o | 30,146 | 37 | 812 | 36 | SW | I | Cloudy and hazy. | | | 3 o | 30,095 | 40 | 943 | 41½ | W | I | Rain. | | ο 22 | 9 30| 30,164 | 34 | 966 | 34 | — | I | Thick fog. | | | 3 o | 30,159 | 39 | 941 | 39 | WNW | I | Cloudy. | | ι 23 | 9 o | 30,146 | 32 | 963 | 31 | S | I | Cloudy. | | δ 24 | 9 o | 30,169 | 40 | 943 | 40 | W | I | Cloudy. | | | 3 o | 30,303 | 35 | 900 | 35 | NS | I | Thick fog. | | ρ 25 | 9 o | 30,295 | 35 | 900 | 34 | E | I | Thick fog. | | | 3 o | 30,258 | 34 | 966 | 35 | E | I | Cloudy. | | η 26 | 9 o | 30,270 | 35 | 867 | 34 | E | I | Cloudy. | | | 3 o | 30,228 | 36 | 839 | 37 | E | I | Cloudy. | | ρ 27 | 9 o | 30,241 | 31 | 933 | 30 | E | I | Fog. | | | 3 o | 30,208 | 35 | 783 | 35 | SW | I | Fine. | | η 28 | 9 o | 30,201 | 33 | 812 | 31 | E | I | Cloudy. | | | 3 o | 30,142 | 39 | 882 | 39 | S | I | Fine. | | ο 29 | 9 o | 30,038 | 34 | 966 | 32½ | E | I | Fine. | | ι 30 | 9 o | 29,949 | 43 | 709 | 44 | SE | I | Fine. | | | 3 o | 29,750 | 41 | 849 | 36 | SE | I | Cloudy. | | δ 31 | 9 o | 29,641 | 44 | 829 | 45 | SSE | I | Cloudy. | | | 4 o | 29,716 | 43 | 861 | 41½ | SSW | I | Cloudy. | | | | 29,699 | 46 | 830 | 47 | S | I | Fine. | ### Whole Month. | Greatest... | 30,552 | 46 | 1,000 | 47 | Rain 0.125 inches. | | Least...... | 29,641 | 17 | 0,000 | 16 | | Mean....... | 30,027 | 34.2 | 841 | 34 | ## METEOROLOGICAL JOURNAL for February, 1826. | Year | Time | Barometer corrected | Therm. without | Degree of Moisture by Daniell's Hygrom. | Sixe's Therm. | Rain | Winds | Weather | |------|------|---------------------|----------------|----------------------------------------|---------------|------|-------|---------| | 1826 | H. M. | Inches. | ° | ° | ° | Inches. | Points. | Str. | | | February | 9 o | 29.796 | 41 | 877 | 40 | — | — | Foggy. | | 3 o | 29.738 | 45 | 859 | 45 | E | I | Cloudy. | | 24 | 9 o | 29.807 | 46 | 898 | 43 | W | I | Cloudy. | | 3 o | 29.772 | 39 | 824 | 40 | SW | I | Fine. | | 9 o | 29.628 | 48 | 904 | 45 | SW | 2 | Fine. | | 3 o | 29.629 | 50 | 910 | 51 | S | 2 | Rain. | | 9 o | 29.843 | 44 | 963 | 43 | SW | I | Cloudy. | | 4 o | 29.837 | 48 | 840 | 49 | — | — | Cloudy. | | 5 o | 29.844 | 45 | 929 | 42 | 0.010 | SSE | I | Fine. | | 3 30 | 29.779 | 47 | 901 | 49 | SSE | 2 | Cloudy. | | 6 | 9 o | 29.484 | 51 | 937 | 46 | W | 3 | Rain. | | 3 o | 29.457 | 52 | 935 | 53 | 0.045 | WbyS | 3 | Rain. | | 7 | 9 o | 29.924 | 43 | 861 | 43 | 0.010 | W | 2 | Fine. | | 3 30 | 30.135 | 48 | 702 | 49 | W | I | Fine. | | 8 | 9 o | 30.335 | 38 | 939 | 36 | S | I | Cloudy. | | 3 o | 30.308 | 47 | 769 | 47 | SW | I | Fine. | | 9 | 9 o | 30.254 | 38 | 970 | 36 | SSE | — | Hazy. | | 3 o | 30.201 | 42 | 895 | 46 | SSE | I | Hazy. | | 10 | 9 o | 30.220 | 33 | 1000 | 32 | E | I | Very hazy. | | 5 o | 30.180 | 35 | 967 | 36 | E | I | Cloudy. | | 11 | 9 o | 30.126 | 36 | 968 | 33 | SE | I | Cloudy. | | 4 o | 30.060 | 39 | 794 | 40 | E | I | Fine. | | 12 | 9 o | 30.029 | 43 | 810 | 35 | SE | I | Fine. | | 3 o | 30.040 | 46 | 864 | 47 | S | I | Cloudy. | | 13 | 9 o | 30.145 | 41 | 904 | 40 | — | — | Hazy. | | 3 30 | 30.018 | 46 | 830 | 48 | SE | I | Fine. | | 14 | 9 o | 29.900 | 45 | 824 | 41 | S | I | Rain. | | 3 o | 29.909 | 46 | 864 | 47 | S | I | Cloudy. | ## METEOROLOGICAL JOURNAL for February, 1826. | 1826 February | Time | Barometer corrected | Therm. without | Degree of Moisture by Daniell's Hygrom. | Sixe's Therm. | Rain | Winds | Weather | |---------------|------|---------------------|---------------|----------------------------------------|--------------|------|-------|---------| | | H, M.| Inches. | | | | | Points | Str. | | 2 15 | 9 o | 29.911 | 46 | 795 | 46 | 0.011| SE | Cloudy. | | | 3 o | 29.840 | 52 | 710 | 53 | | SE | Fine. | | 4 16 | | | | | | | S | Fine. | | | 3 o | 29.653 | 50 | 790 | 53 | | S | Fine. | | 8 17 | 9 o | 29.302 | 48 | 840 | 44 | | SSW | Cloudy. | | | 3 o | 29.354 | 47 | 798 | 49 | | W | Rain. | | 9 18 | 9 o | 29.700 | 40 | 914 | 37 | | SW | Cloudy. | | | 3 o | 29.767 | 44 | 732 | 45 | | S | Hail shower. | | 10 19 | 9 o | 29.487 | 44 | 927 | 38 | 0.125| S | Rain; a very stormy night. | | | 3 o | 29.565 | 52 | 682 | 53 | | W | Cloudy. | | 11 20 | 9 o | 29.755 | 45 | 859 | 44 | | W | Fine; a very stormy night. | | | 3 o | 29.982 | 49 | 680 | 50 | | W | Fine. | | 12 21 | 9 o | 30.279 | 40 | 914 | 38 | | W | Fine. | | | 3 o | 30.291 | 47 | 769 | 48 | 0.165| SW | Cloudy. | | 13 22 | 8 30| 29.952 | 49 | 907 | 46 | | S | Rain. | | | 3 o | 29.867 | 52 | 935 | 53 | 0.078| W | Cloudy. | | 14 23 | 8 30| 29.861 | 44 | 1000 | 44 | 0.145| W | Rain. | | | 3 o | 29.785 | 45 | 929 | 46 | | W | Cloudy. | | 15 24 | 8 30| 30.120 | 35 | 900 | 33½ | 0.030| W | Fine. | | | 3 o | 30.131 | 45 | 753 | 45 | | W | Fine. | | 16 25 | 9 o | 29.968 | 49 | 938 | 42 | 0.192| W | Cloudy. | | | 3 o | 30.006 | 52 | 661 | 54 | | W | Fine. | | 17 26 | 9 o | 30.343 | 40 | 914 | 38 | | W | Fine. | | | 3 o | 30.400 | 48 | 808 | 49 | | WNW | Fine. | | 18 27 | 9 o | 30.287 | 44 | 854 | 41 | | W | Cloudy. | | | 3 o | 30.080 | 50 | 624 | 52 | | W | Cloudy. | | 19 28 | 8 o | 30.179 | 45 | 930 | 43 | 0.020| NW | Cloudy and dark. | | | 3 o | 30.182 | 53 | 847 | 45 | | W | Cloudy. | ### Whole Month - **Greatest:** 30.335 inches - **Least:** 29.302 inches - **Mean:** 29.936 inches Total rainfall: 0.831 inches. ## METEOROLOGICAL JOURNAL for March, 1826. | 1826 March | Time. | Barometer corrected. | Therm. without. | Degree of Moisture by Daniell's Hygrom. | Sixe's Therm. | Rain. | Winds. | Weather. | |------------|-------|---------------------|-----------------|----------------------------------------|--------------|-------|--------|----------| | | H. M. | Inches. | | | | | Points.| Str. | | 8 1 | 9 o | 30.026 | 48 | 808 | 45 | W | 1 | Cloudy. | | | 3 30 | 29.923 | 50 | 820 | 52 | SW | 2 | Cloudy. | | 24 2 | 8 30 | 29.719 | 50 | 940 | 47 | W | 1 | Fine. | | | 3 o | 29.699 | 50 | 880 | 52 | SW | 2 | Rain. | | 8 3 | 9 o | 29.636 | 50 | 910 | 50 | WSW | 1 | Rain. | | | 3 o | 29.723 | 49 | 814 | 50 | 0.158| NW | 1 | Cloudy. | | 2 4 | 9 o | 29.620 | 50 | 790 | 42 | 0.080| W | 3 | Rain. | | | 3 o | 29.647 | 54 | 765 | 55 | S | 2 | Cloudy. | | 5 | 9 o | 29.798 | 43 | 835 | 42 | 0.030| W | 1 | Fine. | | | 4 o | 29.918 | 49 | 814 | 54 | SW | 1 | Fine. | | C 6 | 9 o | 30.132 | 39 | 882 | 36 | E | 1 | Cloudy. | | 7 | 9 o | 29.809 | 57 | 763 | 39 | SSE | 3 | Rain. | | | 3 o | 29.793 | 54 | 791 | 55 | 0.020| W | 2 | Cloudy. | | 8 | 9 o | 30.025 | 50 | 970 | 49½ | S | 1 | Cloudy. | | | 3 o | 29.981 | 57 | 815 | 58 | E | 1 | Fine. | | 24 9 | 9 o | 30.095 | 51 | 937 | 49 | E | 1 | Fine. | | | 3 o | 30.139 | 64 | 698 | 63 | E | 1 | Fine. | | 8 10 | 9 o | 30.291 | 53 | 874 | 50 | E | 1 | Fine. | | | 3 o | 30.284 | 62 | 747 | 65 | SE | 1 | Fine. | ## METEOROLOGICAL JOURNAL for March, 1826. | 1826 March | Time, H. M. | Barometer corrected. Inches. | Therm. without. | Degree of Moisture by Daniell's Hygrom. | Sixe's Therm. | Rain, Inches. | Winds, Points. | Str. | Remarks | |------------|-------------|-----------------------------|----------------|----------------------------------------|--------------|---------------|---------------|-----|---------| | 11 | 9 o | 30.287 | 44 | 963 | 42 | E | 1 | Fine. | | | 3 o | 30.272 | 51 | 850 | 52 | E | 1 | Fine. | | 12 | 9 o | 30.435 | 43 | 861 | 39 | SE | 1 | Fine. | | | 3 o | 30.382 | 50 | 500 | 51 | SE | 2 | Fine. | | 13 | 9 o | 30.420 | 39 | 912 | 36 | E | 1 | Hazy. | | | 3 o | 30.331 | 46 | 705 | 50 | E | 1 | Fine. | | 14 | 9 o | 29.974 | 44 | 890 | 39 | 0.108 | SE | Fine. | | | 3 o | 29.962 | 50 | 700 | 51 | SW | 1 | Fine. | | 15 | 9 o | 29.827 | 45 | 930 | 42 | W | 1 | Cloudy. | | | 3 o | 29.823 | 52 | 682 | 52 | N | 1 | Fine. | | 16 | 9 o | 30.136 | 39 | 882 | 36 | 0.075 | N | Fine, rather hazy. | | | 3 o | 30.235 | 46 | 568 | 52 | N | 1 | Cloudy. | | 17 | 9 o | 30.389 | 37 | 813 | 33 | N | 1 | Cloudy and somewhat hazy. | | | 3 o | 30.326 | 43 | 633 | 45 | E | 1 | Cloudy. | | 18 | 9 o | 30.232 | 35 | 900 | 32 | W | 1 | Hazy. | | | 3 o | 30.577 | 48 | 660 | 48 | S | 1 | Fine. | | 19 | 9 o | 29.855 | 42 | 816 | 34 | 0.065 | W | 1 | Fine. | | | 3 o | 29.836 | 49 | 660 | 50 | N | 2 | Fine. | | 20 | 9 o | 29.950 | 44 | 805 | 37 | NW | 1 | Cloudy. | | | 3 o | 29.916 | 46 | 750 | 49 | N by E | 2 | Cloudy. | | April | 9 o'Clock, A.M. Barom. | Attached Thermometer. | 3 o'Clock, P.M. Barom. | Attached Thermometer. | 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. | |-------|------------------------|----------------------|------------------------|----------------------|---------------------------------|---------------------|-------------------------------|-----------------------------|------------------| | 24 | 30.158 | 54.8 | 30.166 | 57.5 | 51 | 54.2 | 58.8 | 48.8 | WSW | Fine—cloudy. | | 25 | 30.166 | 56.7 | 30.183 | 59.7 | 51 | 56.6 | 62.5 | 50.0 | NNW | Fine—light clouds. | | 26 | 30.215 | 57.0 | 30.141 | 61.0 | 51 | 54.0 | 62.0 | 50.0 | W | Fine—broken clouds. | | 27 | 29.822 | 50.5 | 29.793 | 61.5 | 50 | 59.5 | 58.5 | 52.2 | NW | A.M. nearly cloudless. P.M. cloudy. | | 28 | 29.956 | 56.0 | 29.944 | 57.9 | 39 | 50.8 | 57.0 | 42.8 | WSW | A.M. cloudy. P.M. fine. | | 29 | 29.830 | 56.2 | 29.793 | 58.5 | 53 | 54.9 | 58.8 | 48.9 | SW | Overcast—brisk wind. At 5 P.M. a hail storm. | | 30 | 29.218 | 55.0 | 29.222 | 56.0 | 45 | 52.5 | 49.5 | 48.5 | SW | Dark and cloudy. Frequent showers. | | 31 | 30.130 | 52.2 | 30.144 | 56.0 | 39 | 48.0 | 57.5 | 45.3 | N | Cloudy. | | 32 | 30.235 | 57.0 | 30.214 | 60.0 | 46 | 57.0 | 63.0 | 49.2 | SW | A.M. cloudy. P.M. fine—light clouds. | | 33 | 30.303 | 59.8 | 30.220 | 62.0 | 51 | 58.5 | 65.3 | 49.8 | W | A.M. fine. P.M. cloudy. | | 34 | 30.146 | 57.3 | 30.216 | 59.0 | 49 | 50.5 | 54.8 | 50.8 | NNE | A.M. dark and overcast. Sleet. P.M. fine. | | 35 | 30.315 | 54.0 | 30.243 | 57.0 | 38 | 48.0 | 51.5 | 40.8 | WNW | Fine. | | 36 | 30.229 | 54.0 | 30.220 | 56.0 | 38 | 45.0 | 57.5 | 40.5 | SE | Fine. | | 37 | 30.134 | 55.8 | 30.033 | 58.5 | 42 | 54.2 | 57.5 | 44.0 | SSE | Fine. | | 38 | 29.839 | 55.0 | 29.722 | 58.0 | 42 | 53.5 | 58.0 | 42.0 | E | Fine. | | 39 | 29.707 | 57.8 | 29.639 | 60.0 | 47 | 53.5 | 63.0 | 44.5 | S by W | Fine—light clouds. | | 40 | 29.606 | 60.0 | 29.629 | 62.8 | 49 | 61.0 | 63.8 | 54.0 | SE | Cloudy. | | 41 | 29.800 | 56.0 | 29.804 | 58.0 | 43 | 49.0 | 53.5 | 46.0 | NW | Overcast. | | 42 | 29.911 | 53.8 | 29.899 | 56.0 | 39 | 47.0 | 53.2 | 38.0 | W | A.M. cloudy. P.M. fine—broken clouds. | | 43 | 30.018 | 52.5 | 29.920 | 54.0 | 37 | 47.0 | 51.5 | 40.0 | NW | Fine—overcast. | | 44 | 29.697 | 54.5 | 29.621 | 55.0 | 36 | 49.0 | 50.0 | 43.5 | NW | Fine—cloudy. | | 45 | 29.419 | 51.0 | 29.402 | 51.0 | 42 | 45.0 | 47.0 | 42.5 | SE | Overcast and slightly hazy. | | 46 | 29.895 | 51.0 | 29.913 | 50.0 | 28 | 40.0 | 43.0 | 33.5 | NW | A.M. cloudy. P.M. fine—light clouds. | | 47 | 30.023 | 49.0 | 30.031 | 50.5 | 35 | 43.0 | 48.5 | 34.5 | NW | Overcast and cloudy. | | 48 | 30.140 | 50.5 | 30.148 | 51.0 | 37 | 47.0 | 50.5 | 34.5 | NNE | A.M. fine—light clouds. P.M. overcast. | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. * The Rain Gage undergoing repair during the months of April, May, and June. **OBSERVANDA.** Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge = 83 ft. 2½ in. .................................above the mean level of the Sea (presumed about) = 95 ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House = 79 ft. 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. | May | 9 o’Clock, A.M. Barom. | Attached Thermometer. | 3 o’Clock, P.M. Barom. | Attached Thermometer. | 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 | |-----|------------------------|----------------------|------------------------|----------------------|---------------------------------|-------------------|------------------|-----------------|-------------| | 1 | 30.309 | 51.5 | 30.220 | 52.0 | 38 | 46.0 | 51.5 | 39.0 | NNE | Fine—cloudy. | | 2 | 30.144 | 49.0 | 30.010 | 52.3 | 39 | 48.0 | 57.5 | 36.5 | N | Fine—light clouds. | | 3 | 30.025 | 51.5 | 30.045 | 52.0 | 44 | 48.0 | 48.0 | 43.0 | NNE | Overcast and hazy. | | 4 | 30.047 | 50.0 | 30.010 | 50.5 | 34 | 44.5 | 46.5 | 39.5 | NE | Fine—cloudy. | | 5 | 30.010 | 49.0 | 30.095 | 53.0 | 43 | 45.0 | 50.0 | 40.0 | NE | Cloudy. | | 6 | 30.041 | 50.0 | 30.020 | 51.0 | 35 | 45.0 | 48.0 | 39.5 | NNW | Cloudy—showery. | | 7 | 30.018 | 52.0 | 30.004 | 52.0 | 40 | 49.0 | 51.0 | 39.0 | NNE | Cloudy. | | 8 | 30.027 | 55.0 | 30.004 | 56.0 | 43 | 54.0 | 57.0 | 41.5 | NE | Fine—strong wind. | | 9 | 30.095 | 54.5 | 30.008 | 56.0 | 36 | 51.5 | 60.5 | 39.0 | NNE | Fine—thin scattered clouds. | | 10 | 30.095 | 56.5 | 30.012 | 57.7 | 44 | 55.5 | 61.0 | 44.5 | NNW | Fine—cloudy. | | 11 | 30.117 | 54.5 | 30.126 | 58.0 | 39 | 51.0 | 58.0 | 49.0 | ESE | Foggy and overcast. | | 12 | 30.223 | 54.7 | 30.229 | 56.7 | 39 | 51.0 | 42.5 | 54.5 | ESE | Cloudy and overcast. | | 13 | 30.297 | 55.0 | 30.202 | 56.0 | 34 | 50.0 | 54.0 | 43.5 | SE | Fine. | | 14 | 30.111 | 58.0 | 30.051 | 57.0 | 41 | 53.0 | 57.5 | 39.0 | E | Fine—overcast. | | 15 | 30.146 | 58.8 | 30.136 | 58.3 | 39 | 54.0 | 57.0 | 40.5 | N | Fine—overcast. | | 16 | 30.146 | 57.0 | 30.113 | 58.0 | 45 | 52.0 | 62.0 | 42.5 | E | Overcast and cloudy. | | 17 | 30.115 | 63.0 | 30.142 | 62.5 | 45 | 51.0 | 66.5 | 50.5 | W | Fine—light clouds. | | 18 | 30.105 | 65.0 | 30.105 | 63.0 | 52 | 66.0 | 63.5 | 55.8 | SSW | A.M. fine. P.M. rain: | | 19 | 29.911 | 67.0 | 29.831 | 65.0 | 51 | 63.0 | 68.5 | 50.2 | S | Fine—nearly cloudless. | | 20 | 29.730 | 61.5 | 29.833 | 63.5 | 50 | 56.5 | 63.0 | 53.5 | E | A.M. overcast. P.M. fine—nearly cloudless | | 21 | 30.025 | 59.0 | 30.029 | 62.0 | 46 | 54.0 | 65.0 | 45.8 | SE | A.M. cloudy. P.M. fine—nearly cloudless. | | 22 | 30.105 | 67.5 | 30.027 | 66.0 | 48 | 64.0 | 71.0 | 49.5 | N | Nearly cloudless. | | 23 | 30.044 | 69.0 | 29.944 | 66.0 | 49 | 64.0 | 61.5 | 48.6 | NNW | Cloudy. | | 24 | 29.818 | 61.0 | 29.820 | 64.0 | 50 | 56.5 | 57.5 | 52.0 | N | Rain—overcast. | | 25 | 29.732 | 60.0 | 29.691 | 62.0 | 54 | 55.8 | 58.0 | 52.0 | N | Light rain—cloudy and overcast. | | 26 | 29.691 | 60.0 | 29.720 | 63.0 | 53 | 55.0 | 60.0 | 53.2 | E | Light rain—cloudy and overcast. | | 27 | 29.821 | 62.0 | 29.821 | 64.5 | 57 | 60.8 | 64.0 | 62.8 | E | Cloudy—showery. | | 28 | 29.905 | 67.5 | 29.834 | 66.0 | 56 | 58.9 | 60.0 | 50.0 | NE | Overcast. | | 29 | 29.746 | 58.5 | 29.839 | 59.5 | 54 | 52.0 | 51.0 | 55.0 | NE | Continued rain—overcast. | | 30 | 29.924 | 58.5 | 29.938 | 59.5 | 55 | 53.0 | 54.8 | 51.0 | W | Continued rain—overcast. | | 31 | 29.924 | 58.2 | 29.930 | 60.5 | 52 | 54.5 | 57.0 | 51.5 | E | Dark and overcast. | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \{ 9 \text{ A.M.} \quad 3 \text{ P.M.} \} \] \[ \begin{align*} \text{Mean} & = 29.950 \\ \text{Mean} & = 29.928 \\ \end{align*} \] OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge ........... = 83 ft. 2½ in. ................................. above the mean level of the Sea (presumed about) = 95 ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House .......... = 79 ft. 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. MDCCCXXVII. | 1826. | June. | 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. | Attached Thermometer. | Barom. | Attached Thermometer. | Fahrenheit. | Self-registering. | Lowest. | Highest. | | | 24 | 29.909 | 59.5 | 29.841 | 62.0 | 53 | 54.0 | 59.5 | 52.0 | 61.0 | SW | Overcast and cloudy. | | 2 | 29.928 | 59.0 | — | — | 53 | 53.5 | — | 52.5 | 62.0 | E | Overcast. | | 3 | 30.130 | 65.5 | 30.126 | 64.0 | 49 | 61.0 | 64.0 | 49.8 | 68.0 | NW var. | Fine—light clouds—brisk wind. | | 4 | 30.216 | 68.0 | 30.235 | 65.0 | 55 | 66.5 | 67.0 | 50.0 | 69.0 | SW | A. M. fine, P. M. cloudy and overcast. | | 5 | 30.307 | 66.8 | — | — | 54 | 62.5 | 65.0 | 52.9 | 67.5 | NE | Fine—cloudy. | | 6 | 30.307 | 65.5 | 30.307 | 66.0 | 49 | 60.0 | 69.0 | 53.0 | 71.8 | S | Fine—cloudy. | | 7 | 30.245 | 70.5 | 30.223 | 68.0 | 58 | 62.5 | 62.5 | 58.0 | 67.0 | S | Overcast and cloudy. | | 8 | 30.297 | 68.5 | 30.247 | 67.0 | 57 | 64.0 | 67.5 | 53.0 | 70.5 | N | Cloudy—brisk wind. | | 9 | 30.049 | 72.0 | 30.010 | 70.0 | 58 | 69.5 | 74.0 | 53.8 | 75.2 | E | Fine—light clouds—strong wind. | | 10 | 30.033 | 72.5 | 29.994 | 70.6 | 59 | 67.5 | 72.5 | 53.2 | 75.5 | N | Fine—nearly cloudless. | | 11 | 30.122 | 67.0 | 30.196 | 70.0 | 57 | 63.0 | 73.0 | 55.2 | 75.0 | N | Fine. | | 12 | 30.313 | 74.0 | 30.297 | 73.0 | 58 | 70.8 | 75.0 | 60.0 | 76.5 | E | Fine—cloudy. | | 13 | 30.317 | 71.0 | 30.243 | 74.5 | 59 | 72.5 | 78.0 | 62.0 | 79.5 | E | Fine—nearly cloudless. | | 14 | 30.251 | 72.5 | 30.223 | 74.5 | 60 | 71.0 | 77.5 | 61.5 | 80.8 | W | Fine—light clouds. | | 15 | 30.239 | 76.0 | 30.136 | 74.0 | 57 | 71.5 | 77.7 | 60.0 | 79.5 | W | Fine—nearly cloudless—imperfectly clear. | | 16 | 30.334 | 75.8 | 30.323 | 71.5 | 44 | 63.0 | 67.5 | 53.8 | 79.5 | N | Fine—light clouds. | | 17 | 30.439 | 67.0 | 30.317 | 68.5 | 50 | 62.0 | 72.0 | 54.0 | 74.5 | SW | Fine—light broken clouds. | | 18 | 30.326 | 76.5 | 30.336 | 74.8 | 59 | 72.5 | 76.0 | 62.0 | 77.5 | WNW | Fine—light clouds. | | 19 | 30.439 | 68.8 | 30.408 | 70.5 | 57 | 66.0 | 68.9 | 61.0 | 73.0 | E | Fine—light broken clouds. | | 20 | 30.499 | 65.0 | 30.431 | 69.5 | 47 | 65.0 | 71.0 | 53.5 | 72.0 | SE | Fine—cloudy. | | 21 | 30.425 | 62.6 | 30.427 | 65.0 | 50 | 60.0 | 64.5 | 50.5 | 66.4 | S | Overcast and cloudy. | | 22 | 30.408 | 61.0 | 30.328 | 65.8 | 54 | 58.5 | 69.0 | 53.8 | 70.5 | E | Fine—light clouds. | | 23 | 30.425 | 62.0 | 30.418 | 67.3 | 54 | 60.0 | 72.0 | 51.5 | 73.3 | N | Fine and cloudless—imperfectly clear. | | 24 | 30.408 | 69.5 | 30.406 | 72.2 | 51 | 68.2 | 77.0 | 52.0 | 78.0 | N | Fine and cloudless—imperfectly clear. | | 25 | 30.347 | 69.5 | 30.309 | 72.5 | 51 | 71.0 | 75.0 | 56.0 | 75.2 | E | Fine and cloudless—imperfectly clear | | 26 | 30.220 | 72.0 | 30.212 | 74.8 | 59 | 74.0 | 76.0 | 57.0 | 80.3 | E | Fine and cloudless—imperfectly clear | | 27 | 30.051 | 75.0 | 30.010 | 77.0 | 62 | 77.2 | 82.0 | 65.0 | 87.5 | SE | Fine and cloudless. Thunder at 11 P. M. | | 28 | 30.115 | 79.8 | 30.105 | 78.5 | 62 | 80.0 | 77.0 | 69.0 | 87.0 | S | A.M. cloudless, P.M. dark and cloudy. | | 29 | 30.233 | 75.5 | 30.223 | 76.5 | 62 | 73.5 | 77.5 | 63.0 | 81.5 | S | At 2h. 35m. P. M. thunder with rain. | | 30 | 30.221 | 76.8 | 30.208 | 76.5 | 62 | 75.2 | 79.5 | 63.0 | 84.5 | WSW | Fine—cloudy. | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \begin{array}{cccccccc} \text{Mean} & \text{Mean} & \text{Mean} & \text{Mean} & \text{Mean} & \text{Mean} & \text{Mean} & \text{Mean} \\ 30.252 & 69.5 & 30.233 & 70.7 & 55.3 & 66.5 & 72.0 & 56.4 & 74.6 \\ \end{array} \] OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge........ = 83 ft. 2½ in. .................................................. above the mean level of the Sea (presumed about) = 95 ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House ........... = 79 ft. 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. | July | 9 o'Clock, A. M. Barom. | Attached Thermometer. | 3 o'Clock, P. M. Barom. | Attached Thermometer. | 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 | |------|------------------------|-----------------------|------------------------|-----------------------|---------------------------------|---------------------|-------------------------------|-----------------------------|------------------| | 1 | 30.212 | 72.0 | 30.196 | 75.0 | 64 | 69.5 | 75.5 | 67.4 | 76.8 | WSW Overcast and cloudy. | | 2 | 30.297 | 76.2 | 30.239 | 75.0 | 56 | 75.5 | 79.0 | 62.4 | 81.2 | NW Fine and clear—a few broken clouds. | | 3 | 30.299 | 74.0 | 30.241 | 76.8 | 65 | 74.0 | 80.0 | 64.8 | 83.0 | S var. Fine—cloudy—brisk wind. | | 4 | 30.111 | 77.0 | 30.025 | 77.5 | 62 | 77.0 | 79.0 | 62.8 | 81.4 | E Fine—cloudy. | | 5 | 29.944 | 80.0 | 29.932 | 78.5 | 65 | 78.5 | 80.0 | 67.5 | 82.5 | SW Fine—nearly cloudless—strong wind. | | 6 | 29.942 | 67.5 | 29.903 | 74.5 | 64 | 67.0 | 78.5 | 63.8 | 81.2 | S Fine—cloudy. | | 7 | 29.778 | | 29.712 | | 64 | 75.5 | 78.0 | | | SSW Fine. N. | | 8 | 29.655 | | 29.634 | | 63 | 76.0 | 77.0 | | | SW Overcast—showery. N. | | 9 | 29.647 | | 29.611 | | 66 | 74.0 | 78.0 | | | SW Overcast. N. | | 10 | 29.704 | | 29.757 | | 64 | 71.0 | 76.0 | | | W Fine—cloudy. N. | | 11 | 29.842 | | 29.866 | | 64 | 70.0 | 73.0 | | | W Cloudy. Thunder at 11 A.M. N. | | 12 | 29.843 | | 29.715 | | 65 | 67.0 | 72.0 | | | SW Cloudy. N. | | 13 | 29.672 | | 29.605 | | 68 | 68.5 | 68.0 | | | SW Cloudy—showery. N. | | 14 | 29.739 | | 29.764 | | 67 | 68.0 | 73.0 | | | W Fine. N. | | 15 | 29.849 | | 29.819 | | 65 | 68.0 | 72.0 | | | W Fine. N. | | 16 | 29.790 | | 29.729 | | 63 | 63.0 | 68.0 | | | W Fine—cloudy—showery. N. | | 17 | 29.975 | | 29.929 | | 57 | 66.0 | 73.0 | | | W by N Fine. N. | | 18 | 29.951 | | 29.876 | | 64 | 67.0 | 74.0 | | | WNW Fine. N. | | 19 | 29.921 | | 29.938 | | 55 | 65.0 | 71.0 | | | W by N Fine. N. | | 20 | 29.990 | | 29.976 | | 55 | 69.0 | 67.5 | | | NW Very cloudy—brisk wind. | | 21 | 29.606 | | 29.635 | | 57 | 64.8 | 65.0 | 61.0 | 69.2 | SW Sky clear—dark clouds and strong wind—showery. | | 22 | 29.802 | | 29.901 | | 58 | 68.0 | 65.0 | 54.5 | 66.8 | E Cloudy—brisk wind. | | 23 | 29.944 | | 30.029 | | 59 | 56.5 | 57.5 | 55.8 | 61.0 | SW Overcast and gloomy—strong wind—showery. | | 24 | 30.035 | | 30.105 | | 58 | 60.0 | 68.0 | 55.5 | 69.5 | N Fine—light clouds—strong wind. | | 25 | 30.136 | | 30.136 | | 57 | 62.0 | 72.0 | 55.4 | 73.8 | N Clear and cloudless. | | 26 | 30.301 | | 30.322 | | 56 | 66.0 | 70.1 | 56.0 | 72.0 | ESE Fine—light clouds—brisk wind. | | 27 | 30.332 | | 30.317 | | 54 | 63.5 | 70.5 | 52.3 | 72.4 | N Fine—light clouds. | | 28 | 30.251 | | 30.212 | | 53 | 65.0 | 71.5 | 57.0 | 73.5 | E Fine—nearly cloudless. | | 29 | 30.124 | | 30.103 | | 56 | 69.0 | 75.0 | 57.8 | 75.8 | SE Fine—nearly cloudless. | | 30 | 30.122 | | 30.041 | | 58 | 72.0 | 76.0 | 61.0 | 79.1 | W Cloudless. | | 31 | 30.031 | | 30.004 | | 59 | 75.0 | 80.0 | 67.5 | 82.4 | SE At 10 A.M. thunder and lightning, with a few drops of rain. P. M. cloudless. | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \begin{align*} \text{Mean} & = 29.965 \\ \text{Mean} & = 70.1 \\ \text{Mean} & = 29.944 \\ \text{Mean} & = 71.8 \\ \text{Mean} & = 60.7 \\ \text{Mean} & = 68.7 \\ \text{Mean} & = 73.0 \\ \text{Mean} & = 60.1 \\ \text{Mean} & = 75.7 \\ \text{Sum} & = 2.359 \end{align*} \] OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge........ = 83 ft. 2½ in. ......................... above the mean level of the Sea (presumed about) = 95 ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House ........... = 79 ft. 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. | August | 9 o'Clock A.M. Barom. | 3 o'Clock P.M. Barom. | 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 | |--------|----------------------|-----------------------|-------------------------------------|---------------------|-------------------------------|-------------------------------|---------| | 1826 | | | | Fahrenheit | Self-registering | | | | | | | | 9 A.M. | 3 P.M. Lowest. | Highest. | | | 8 | 30.103 | 74.0 | 30.101 | 78.5 | 65 | 71.5 | 78.5 | 68.0 | 80.0 | NNE | Fine—light clouds. | | 2 | 30.023 | 70.0 | 29.994 | 76.0 | 63 | 68.0 | 76.0 | 63.0 | 77.0 | E | Fine—thin spreading clouds. | | 3 | 29.911 | 68.0 | 29.911 | 72.0 | 66 | 65.2 | 72.0 | 64.8 | 73.8 | NNE | Overcast. At 10th 30th P.M. lightning and heavy rain. | | 4 | 29.994 | 65.2 | 30.008 | 72.6 | 61 | 63.5 | 71.0 | 59.2 | 73.2 | N | Overcast and lowering. | | 5 | 30.041 | 63.3 | 30.081 | 68.0 | 62 | 61.5 | 67.0 | 58.0 | 69.2 | N | Overcast and gloomy. | | 6 | 30.109 | 67.8 | 30.137 | 71.9 | 57 | 65.5 | 71.9 | 58.0 | 73.5 | NW | Fine—light clouds. | | 7 | 30.216 | 70.0 | 30.198 | 73.0 | 55 | 67.8 | 73.5 | 63.0 | 74.8 | SSW | Fine—light clouds. | | 8 | 30.119 | 71.0 | 30.095 | 74.6 | 65 | 69.8 | 74.6 | 62.0 | 75.7 | SW | Fine—nearly cloudless. | | 9 | 30.029 | 69.0 | 29.994 | 74.0 | 59 | 67.9 | 74.0 | 62.4 | 74.6 | 0.031 | Sky overspread with small clouds. | | 10 | 30.000 | 67.6 | 29.922 | 71.5 | 59 | 67.8 | 71.0 | 61.6 | 72.6 | N | Fine—nearly cloudless. | | 11 | 29.905 | 65.0 | 29.831 | 65.4 | 61 | 62.0 | 63.0 | 60.0 | 65.5 | SSW | Overcast—showery. | | 12 | 30.016 | 64.8 | 30.045 | 68.0 | 53 | 63.5 | 67.5 | 55.2 | 70.5 | 0.010 | Fine—light clouds. | | 13 | 30.247 | 65.0 | 30.196 | 69.0 | 55 | 64.3 | 68.7 | 55.0 | 70.6 | WSW | A.M. cloudless. P.M. cloudy and overcast. | | 14 | 29.994 | 67.0 | 29.920 | 72.5 | 56 | 66.5 | 72.2 | 56.5 | 75.5 | SSW | Fine and clear—strong breeze. | | 15 | 30.124 | 66.2 | 30.041 | 70.0 | 54 | 66.0 | 70.0 | 57.0 | 72.0 | SSW | A.M. lowering—brisk wind—showery. | | 16 | 29.946 | 66.8 | 29.994 | 69.0 | 64 | 65.0 | 69.0 | 61.2 | 70.3 | SSW | Fine—light stretching clouds. | | 17 | 30.136 | 65.6 | 30.134 | 70.5 | 57 | 64.5 | 71.0 | 56.6 | 73.0 | WSW | Fine—light fleecy clouds. | | 18 | 30.316 | 69.2 | 30.326 | 74.5 | 65 | 69.8 | 75.5 | 64.2 | 76.4 | SSW | Fine—nearly cloudless. | | 19 | 30.322 | 70.0 | 30.241 | 75.0 | 57 | 69.5 | 75.2 | 63.0 | 77.6 | SW | Fine and clear—nearly cloudless. | | 20 | 30.095 | 70.5 | 30.031 | 77.8 | 66 | 70.0 | 79.0 | 62.7 | 81.2 | NE | Cloudy and foggy. | | 21 | 29.948 | 65.0 | 29.938 | 71.2 | 59 | 63.0 | 70.5 | 61.2 | 72.5 | NNE | Fine. Strong unsteady wind during the night. | | 22 | 29.905 | 68.4 | 29.930 | 72.0 | 60 | 67.0 | 72.5 | 61.6 | 74.0 | ESE | Lowering—strong, unsteady wind. | | 23 | 29.837 | 68.0 | 29.735 | 70.0 | 62 | 66.5 | 69.0 | 62.0 | 71.8 | SSW | A.M. nearly cloudless. P.M. very cloudy. | | 24 | 29.716 | 70.0 | 29.738 | 70.6 | 60 | 65.8 | 70.5 | 61.0 | 73.8 | SW | Fine—brisk wind. At 3 P.M. thunder and lightning, with rain—sultry. | | 25 | 29.798 | 70.4 | 29.720 | 73.0 | 62 | 69.5 | 74.5 | 64.8 | 75.9 | SSW | Fine—light broken clouds—brisk wind. | | 26 | 29.821 | 66.9 | 29.823 | 69.6 | 63 | 65.5 | 68.5 | 62.8 | 70.6 | W by N | Cloudy. | | 27 | 29.950 | 66.5 | 30.008 | 69.0 | 56 | 63.5 | 68.0 | 57.5 | 70.0 | SSW | Cloudy and lowering. | | 28 | 30.004 | 66.2 | 30.014 | 71.2 | 63 | 65.0 | 69.9 | 58.5 | 72.5 | ESE | Fine and clear—light clouds—showery. | | 29 | 29.956 | 70.8 | 29.893 | 72.6 | 68 | 68.8 | 73.0 | 65.6 | 74.5 | SE | Fine—cloudy. | | 30 | 29.764 | 70.5 | 29.706 | 74.0 | 66 | 70.4 | 74.5 | 64.9 | 77.5 | SSE | Cloudy and overcast. | | 31 | 29.849 | 67.8 | 29.848 | 70.5 | 60 | 65.0 | 69.0 | 63.0 | 71.5 | | | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. 9 A.M. 3 P.M. 29.917 29.886 OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge = 83 ft. 2½ in. above the mean level of the Sea (presumed about) = 95 ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House = 79 ft. 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. | September | 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. | Attached Thermo-| Barom. | Fahrenheit | Self-registering | | | | | | meter. | | 9 A. M. | Lowest. | Highest. | | | | | | | 3 P. M. | | | | | 1826 | | | | | | | | | 1 | 29.825 | 65.2 | 29.807 | 69.5 | 60 | 63.0 | 67.9 | 60.2 | 69.5 | ESE | | 2 | 29.720 | 62.7 | 29.701 | 65.4 | 63 | 62.0 | 62.0 | 58.7 | 64.8 | N var. | | 3 | 29.792 | 65.8 | 29.869 | 67.8 | 64 | 63.0 | 65.5 | 61.1 | 67.0 | NE | | 4 | 29.958 | 65.2 | 29.942 | 70.5 | 64 | 64.8 | 70.0 | 59.3 | 72.3 | ESE | | 5 | 29.947 | 63.5 | 29.921 | 64.5 | 61 | 62.8 | 60.5 | 58.5 | 64.8 | NNW | | 6 | 29.905 | 58.0 | 29.237 | 66.0 | 56 | 56.8 | 64.0 | 55.0 | 65.6 | NE | | 7 | 29.166 | 57.8 | 29.452 | 58.7 | 56 | 55.0 | 56.0 | 52.9 | 57.5 | WNW | | 8 | 29.631 | 57.0 | 29.635 | 63.1 | 55 | 56.5 | 64.8 | 50.0 | 66.6 | SW | | 9 | 29.771 | 58.0 | 29.822 | 61.3 | 54 | 54.6 | 62.0 | 52.9 | 63.0 | ESE | | 10 | 30.022 | 59.1 | 30.064 | 63.2 | 53 | 57.3 | 62.9 | 50.0 | 63.9 | SW | | 11 | 30.213 | 56.8 | 30.215 | 62.5 | 53 | 55.3 | 62.0 | 49.9 | 63.8 | WNW | | 12 | 30.240 | 56.5 | 30.197 | 63.6 | 54 | 55.5 | 63.5 | 49.8 | 65.0 | SW | | 13 | 30.089 | 58.2 | 30.017 | 64.5 | 56 | 57.9 | 64.0 | 52.0 | 65.0 | SSW | | 14 | 29.912 | 59.4 | 29.929 | 66.2 | 58 | 59.0 | 65.4 | 52.7 | 67.7 | SW | | 15 | 30.226 | 53.0 | 30.270 | 61.8 | 51 | 53.0 | 61.2 | 47.2 | 62.4 | N | | 16 | 30.290 | 55.4 | 30.213 | 62.9 | 54 | 56.0 | 62.1 | 48.0 | 66.9 | E | | 17 | 30.007 | 56.8 | 29.949 | 65.0 | 56 | 57.2 | 66.2 | 50.3 | 68.0 | ENE | | 18 | 29.849 | 62.2 | 29.782 | 63.8 | 62 | 61.5 | 61.5 | 57.2 | 64.0 | NE | | 19 | 29.903 | 64.3 | 29.901 | 66.5 | 63 | 63.0 | 67.0 | 61.0 | 68.0 | SSW | | 20 | 29.840 | 61.3 | 29.843 | 64.5 | 61 | 59.7 | 63.0 | 59.0 | 64.0 | WNW var.| | 21 | 30.054 | 59.9 | 30.083 | 63.6 | 54 | 57.0 | 60.8 | 51.8 | 63.2 | NE | | 22 | 30.135 | 53.0 | 30.126 | 58.5 | 51 | 52.5 | 58.9 | 46.2 | 58.5 | ESE | | 23 | 30.055 | 51.0 | | | 48 | 51.6 | 43.8 | | | E | | 24 | | 29.641 | | | | | | | | N | | 25 | 29.639 | | | | | | | | | S | | 26 | 29.802 | | | | | | | | | SW | | 27 | 29.968 | | | | | | | | | W | | 28 | 30.156 | | | | | | | | | SW | | 29 | 30.146 | | | | | | | | | SW | | 30 | 29.762 | | | | | | | | | SW | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \{ 9 \text{ A. M.} \quad 3 \text{ P. M.} \} \] \[ \{ 29.867 \quad 29.820 \} \] **OBSERVANDA.** Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge = 83 ft. 2½ in. ................................. above the mean level of the Sea (presumed about) = 95 ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House = 79 ft. 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. | October | 9 o’Clock, A. M. Barom. | 3 o’Clock, P. M. Barom. | 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 | |---------|------------------------|------------------------|---------------------------------|---------------------|----------------------------------|-----------------------------|----------| | | Attached Thermometer. | Attached Thermometer. | | | | | | | 1826 | | | | | | | | | 1 | 29.802 | 29.786 | 60 | 58.0 | 62.0 | W | Rain. N. | | 2 | 29.944 | 29.938 | 55 | 54.0 | 60.0 | SE | Fine. N. | | 3 | 29.909 | 29.893 | 55 | 54.0 | 59.0 | W | Fine. N. | | 4 | 29.772 | 58.0 | 56.3 | 53 | 52.0 | SW | A. M. cloudless. P.M. gloomy—very small rain. | | 5 | 29.787 | 50.0 | 55.0 | 44 | 46.0 | SSW | Cloudy and hazy. | | 6 | 30.118 | 47.0 | 30.123 | 52.0 | 40 | SW | Fine and cloudless—hazy. | | 7 | 30.105 | 50.0 | 30.055 | 56.2 | 47 | S | Cloudy—brisk wind. | | 8 | 29.949 | 56.8 | 29.848 | 59.5 | 55 | SSW | Fine and clear—brisk wind. Heavy rain at 8 P.M. | | 9 | 29.809 | 55.1 | 29.775 | 57.2 | 50 | WNW | Cloudy and overcast—showery. | | 10 | 29.683 | 53.0 | 29.722 | 61.6 | 52 | SSW | Overcast—showery. | | 11 | 30.079 | 61.0 | 30.098 | 65.0 | 59 | WSW | Fine—light clouds. | | 12 | 30.133 | 61.8 | 30.104 | 64.0 | 61 | SW | Fine—cloudy. | | 13 | 30.079 | 62.4 | 30.123 | 63.5 | 61 | WSW | Overcast—brisk wind. | | 14 | 30.211 | 49.5 | 30.153 | 56.8 | 46 | E | Overcast and foggy. | | 15 | 29.944 | 58.0 | 29.809 | 61.2 | 56 | ESE | A. M. foggy. P.M. fine and clear. | | 16 | 29.629 | 59.8 | 29.639 | 63.0 | 57 | SSE | Cloudy. At 2 P.M. thunder, with heavy rain. | | 17 | 30.030 | 55.8 | 29.991 | 59.6 | 50 | ESE | A. M. overcast. P.M. fine and clear. | | 18 | 29.994 | 56.8 | 30.004 | 59.1 | 54 | ENE | Overcast and foggy. | | 19 | 30.017 | 59.5 | 30.000 | 61.3 | 58 | E var. | Overcast and gloomy—brisk wind. | | 20 | 29.992 | 61.8 | 29.974 | 62.7 | 59 | ESE | Overcast—faintly hazy. | | 21 | 30.000 | 61.4 | 29.978 | 65.0 | 60 | SE | Fine—cloudy. | | 22 | 29.960 | 62.1 | 29.919 | 63.2 | 60 | SE | Overcast and gloomy—showery. | | 23 | 29.921 | 62.1 | 29.912 | 63.5 | 60 | SE | Strong fog. Thunder and lightning with heavy rain, at noon. | | 24 | 29.961 | 61.1 | 29.872 | 63.2 | 57 | SW var. | Fine—cloudy—light clouds. | | 25 | 29.425 | 60.3 | 29.409 | 61.3 | 58 | SW var. | Fine. Violent gales during the early part of the morning. | | 26 | 29.434 | 54.3 | 29.496 | 54.7 | 43 | WNW | Fine—light clouds—faint haze. | | 27 | 29.635 | 53.0 | 29.618 | 54.2 | 48 | S by E | Overcast and foggy—showery. | | 28 | 30.119 | 51.0 | 30.114 | 53.9 | 43 | WNW | Cloudy. | | 29 | 30.155 | 50.8 | 30.092 | 53.2 | 46 | WSW | Overcast and hazy. | | 30 | 30.128 | 53.1 | 30.085 | 54.2 | 51 | SE | Overcast and gloomy. | | 31 | 30.098 | 53.0 | 30.078 | 54.3 | 47 | NW | Fine—cloudy. | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \text{Mean} = \frac{29.930 + 56.4 + 29.909 + 59.1 + 53.1}{5} = 53.6 \] \[ \text{Mean} = \frac{57.4 + 50.3}{2} = 53.9 \] \[ \text{Sum} = 1.871 \] OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge........ = 83 ft. 2\(\frac{1}{2}\) in. .........................above the mean level of the Sea (presumed about) = 95 ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House ........ = 79 ft. 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. | November | 9 o’Clock, A. M. Barom. | Attached Thermometer. | 9 o’Clock, A. M. Barom. | Attached Thermometer. | 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 | |----------|------------------------|----------------------|------------------------|----------------------|---------------------------------|---------------------|-----------------------------|-----------------------------|------------------| | 1826 | | | | | | | | | | | 1 | 29.758 | 50.6 | 29.609 | 52.7 | 44 | 45.3 | 47.8 | 41.5 | SW | | | | | | | | | | | Overcast—disjointed clouds. | | 2 | 29.792 | 46.6 | 29.825 | 50.0 | 39 | 42.0 | 47.8 | 40.0 | NNW | | | | | | | | | | | Fine and cloudless—very faint haze. | | 3 | 29.908 | 48.0 | 29.825 | 51.6 | 46 | 46.1 | 50.2 | 43.0 | NNE | | | | | | | | | | | Violent gales, with rain, in the evening and during the night. | | 4 | 29.767 | 50.2 | 29.782 | 50.9 | 49 | 47.8 | 47.0 | 46.6 | NNE | | | | | | | | | | | Overcast and gloomy. Continued rain. | | 5 | 29.866 | 48.2 | 29.812 | 50.3 | 46 | 45.7 | 47.8 | 42.0 | NNE | | | | | | | | | | | Overcast and gloomy. Showery. | | 6 | 29.789 | 48.5 | 29.778 | 48.4 | 46 | 45.0 | 42.8 | 43.8 | W | | | | | | | | | | | Overcast and gloomy. Frequent showers. | | 7 | 29.931 | 41.3 | 29.982 | 42.8 | 30 | 34.1 | 40.8 | 30.3 | W | | | | | | | | | | | Fine—light clouds. | | 8 | 30.092 | 40.8 | 30.085 | 42.6 | 33 | 35.2 | 40.6 | 32.3 | W | | | | | | | | | | | Cloudless—faint haze. | | 9 | 30.155 | 40.0 | 30.172 | 43.1 | 36 | 36.8 | 42.2 | 32.5 | NNW | | | | | | | | | | | Nearly cloudless. | | 10 | 30.071 | 40.0 | 29.920 | 42.5 | 33 | 35.6 | 44.1 | 31.2 | SW | | | | | | | | | | | Overcast, gloomy, and foggy. | | 11 | 29.801 | 44.7 | 29.689 | 47.2 | 49 | 47.0 | 51.3 | 44.5 | WSW | | | | | | | | | | | Cloudy. | | 12 | 29.644 | 47.0 | 29.529 | 49.8 | 46 | 44.0 | 48.9 | 42.0 | SW | | | | | | | | | | | Overcast and hazy. | | 13 | 29.452 | 43.1 | 29.204 | 47.7 | 41 | 39.0 | 45.7 | 35.1 | SW | | | | | | | | | | | Overcast and foggy. | | 14 | 29.083 | 44.8 | 29.145 | 46.0 | 39 | 39.7 | 43.2 | 38.4 | NNE | | | | | | | | | | | Overcast and cloudy. | | 15 | 29.594 | 43.7 | 29.697 | 45.7 | 39 | 39.3 | 44.1 | 37.8 | NW | | | | | | | | | | | Nearly cloudless. | | 16 | 29.683 | 41.0 | 29.988 | 44.0 | 34 | 33.8 | 41.2 | 31.7 | SW | | | | | | | | | | | Clear and cloudless. | | 17 | 29.908 | 46.5 | 29.983 | 47.8 | 45 | 45.0 | 45.0 | 38.4 | ESE | | | | | | | | | | | Overcast and lowering. | | 18 | 30.152 | 45.1 | 30.114 | 46.5 | 42 | 43.8 | 45.2 | 38.2 | NNE | | | | | | | | | | | Overcast and foggy. | | 19 | 30.172 | 47.0 | 30.186 | 47.8 | 43 | 45.0 | 45.0 | 44.4 | NNE | | | | | | | | | | | Overcast and gloomy. Showery. | | 20 | 30.381 | 46.3 | 30.420 | 47.6 | 43 | 43.9 | 45.5 | 43.1 | N by E | | | | | | | | | | | Overcast, gloomy, and foggy. | | 21 | 30.503 | 45.9 | 30.468 | 47.0 | 34 | 43.8 | 44.2 | 41.9 | NE by N | | | | | | | | | | | Partially overcast—faint haze. | | 22 | 30.433 | 45.0 | 30.358 | 46.8 | 37 | 41.8 | 44.2 | 40.0 | N by W | | | | | | | | | | | Cloudy—dense fog. | | 23 | 30.114 | 46.3 | — | — | 41 | 43.8 | — | 42.6 | SW | | | | | | | | | | | Cloudy—dense white fog. | | 24 | 29.519 | 48.0 | 29.404 | 48.7 | 43 | 42.6 | 43.0 | 42.6 | SW | | | | | | | | | | | Fine—light clouds and haze. | | 25 | 29.156 | 43.0 | 29.142 | 44.3 | 30 | 34.8 | 38.3 | 31.7 | SW | | | | | | | | | | | A. M. clear and cloudless—brisk wind. | | 26 | 29.313 | 38.8 | 29.361 | 39.9 | 24 | 27.2 | 33.9 | 26.8 | SW | | | | | | | | | | | P. M. overcast. | | 27 | 29.681 | 37.2 | 29.768 | 38.9 | 28 | 30.6 | 35.6 | 29.5 | WSW | | | | | | | | | | | A. M. strong white fog and hoar frost. | | 28 | 29.790 | 37.6 | 29.648 | 40.2 | 36 | 36.0 | 43.2 | 30.8 | W | | | | | | | | | | | A. M. white fog, P. M. fine and cloudless | | 29 | 29.384 | 43.2 | 29.345 | 46.7 | 44 | 46.5 | 40.8 | 43.5 | SW by S | | | | | | | | | | | Overcast and gloomy. Continued rain. | | 30 | 29.371 | 46.2 | 29.417 | 47.8 | 45 | 44.2 | 45.7 | 41.9 | SSE | | | | | | | | | | | Cloudy. Showery. | | | | | | | | | | | Cloudy and foggy. | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \begin{align*} \text{Mean} & = 29.820 \\ \text{Mean} & = 44.5 \\ \text{Mean} & = 29.781 \\ \text{Mean} & = 46.0 \\ \text{Mean} & = 39.5 \\ \text{Mean} & = 40.8 \\ \text{Mean} & = 44.2 \\ \text{Mean} & = 38.3 \\ \text{Mean} & = 45.5 \\ \text{Sum} & = 0.457 \\ \end{align*} \] OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge........ = 83 ft. 2\(\frac{1}{4}\) in. ......................... above the mean level of the Sea (presumed about) = 95 ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House ........ = 79 ft. 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. | 1826. December | 9 o'Clock, A. M. Barom. | Attached Thermometer. | 3 o'Clock, P. M. Barom. | Attached Thermometer. | 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 | |---------------|------------------------|----------------------|------------------------|----------------------|---------------------------------|---------------------|-----------------------------|---------------------------|----------| | | | | | | | | | | | | 1 | 29.492 | 44.2 | 29.316 | 45.8 | 39 | 38.8 | 41.8 | 35.6 | SW | | 2 | 29.166 | 42.0 | 29.108 | 46.3 | 41 | 40.5 | 45.0 | 40.5 | SW | | 3 | 29.452 | 44.0 | 29.389 | 45.3 | 39 | 38.5 | 40.8 | 37.5 | W | | 4 | 29.419 | 41.1 | 29.544 | 42.3 | 36 | 35.9 | 37.8 | 32.8 | WNW | | 5 | 29.732 | 41.0 | 29.675 | 41.3 | 38 | 38.3 | 37.3 | 35.0 | WNW | | 6 | 29.695 | 40.0 | 29.742 | 41.8 | 38 | 36.4 | 41.7 | 34.0 | ESE | | 7 | 29.625 | 46.1 | 29.517 | 49.0 | 48 | 50.8 | 52.2 | 42.0 | SW | | 8 | 29.294 | 51.0 | 29.391 | 52.6 | 48 | 49.0 | 50.5 | 47.2 | SW | | 9 | 29.893 | 49.2 | 29.893 | 50.2 | 41 | 41.2 | 45.0 | 40.5 | SW | | 10 | 29.893 | 51.0 | 29.877 | 53.5 | 50 | 51.0 | 52.5 | 45.5 | WSW | | 11 | 29.871 | 52.5 | 29.887 | 54.0 | 50 | 51.0 | 51.0 | 49.0 | S | | 12 | 29.881 | 52.0 | 29.685 | 52.0 | 49 | 49.5 | 50.0 | 46.0 | SSW | | 13 | 29.540 | 51.5 | 29.540 | 53.0 | 47 | 48.0 | 49.0 | 47.8 | S | | 14 | 29.623 | 50.0 | 29.609 | 51.4 | 47 | 45.0 | 47.5 | 43.0 | SSW | | 15 | 29.657 | 50.3 | 29.602 | 50.8 | 46 | 45.8 | 46.8 | 44.0 | S by W | | 16 | 29.592 | 50.0 | 29.637 | 50.8 | 47 | 46.7 | 47.6 | 45.0 | E | | 17 | 29.861 | 48.8 | 29.907 | 48.8 | 45 | 44.0 | 43.5 | 44.0 | NE | | 18 | 29.999 | 46.2 | 29.994 | 46.3 | 50 | 41.0 | 41.8 | 40.8 | NNE | | 19 | 30.078 | 45.2 | 30.050 | 45.7 | 35 | 40.8 | 41.2 | 40.2 | NNE | | 20 | 29.902 | 45.0 | 29.712 | 46.1 | 41 | 40.9 | 40.0 | 39.3 | SSE | | 21 | 29.681 | 44.2 | 29.852 | 44.5 | 38 | 39.2 | 40.8 | 38.0 | WNW | | 22 | 30.276 | 41.4 | 30.230 | 42.8 | 30 | 33.4 | 39.9 | 32.2 | WNW | | 23 | 30.253 | 44.2 | 30.242 | 45.8 | 43 | 44.1 | 47.0 | 40.1 | WSW | | 24 | 30.305 | 47.0 | 30.301 | 47.3 | 46 | 45.8 | 45.0 | 45.8 | NNW | | 25 | 30.354 | 47.0 | 30.355 | 47.0 | 44 | 44.3 | 45.1 | 44.3 | N by E | | 26 | 30.449 | 46.8 | 30.464 | 46.8 | 43 | 42.5 | 42.4 | 42.0 | NE | | 27 | 30.550 | 45.8 | 30.535 | 46.4 | 41 | 41.2 | 42.8 | 40.3 | NNE | | 28 | 30.571 | 43.2 | 30.564 | 43.4 | 37 | 36.6 | 38.3 | 36.4 | N by E | | 29 | 30.419 | 43.0 | 30.297 | 44.0 | 38 | 40.0 | 44.0 | 33.0 | WNW | | 30 | 30.206 | 45.5 | 30.172 | 47.0 | 42 | 45.5 | 48.0 | 43.0 | NNW | | 31 | 30.229 | 46.0 | 30.180 | 47.5 | 44 | 45.0 | 48.0 | 41.0 | W | Monthly Mean of the Barometer, corrected for Capillarity and reduced to 32° Fahr. \[ \{ 9 \text{ A. M.} \quad 3 \text{ P. M.} \} \] \[ \begin{align*} \text{Mean} & = 29.902 \\ \text{Mean} & = 46.3 \\ \text{Mean} & = 29.879 \\ \text{Mean} & = 47.4 \\ \text{Mean} & = 42.6 \\ \text{Mean} & = 42.9 \\ \text{Mean} & = 44.6 \\ \text{Mean} & = 40.8 \\ \text{Mean} & = 45.7 \\ \text{Sum} & = 0.099 \end{align*} \] OBSERVANDA. Height of the Cistern of the Barometer above a Fixed Mark on Waterloo Bridge \(= 83\) ft. \(2\frac{1}{2}\) in. Above the mean level of the Sea (presumed about) \(= 95\) ft. The External Thermometer is 2 feet higher than the Barometer Cistern. Height of the Receiver of the Rain Gage above the Court of Somerset House \(= 79\) ft. 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.