Appendix to report of the committee for scientific inquiries in relation to the cholera-epidemic of 1854.

  • Great Britain. General Board of Health. Medical Council.
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: Appendix to report of the committee for scientific inquiries in relation to the cholera-epidemic of 1854. Source: Wellcome Collection.

    18/454 (page 6)
    The numbers in tlie lower line show the weekly pressure of the atmosphere over the metropolitan districts at the level of the sea. They are not remarkable till the second week in August: the pressure then exceeded 30 inches, and, with the exception of a slight defect (0-032 in.) in the following week, it exceeded 30 inches in each suc- ceeding week till the end of September. The pressure during the first and second weeks in September was remarkably high, exceeding 30i inches in botli weeks; it decreased in the third week, and in- creased in both of the following weeks. It was low in the last two weeks in October, very high in the first two weeks in November, low in the last two weeks, and afterwards variable. By comparing the numbers at the several stations, it will be seen, as might have been expected over so small a space as the metropolis, that the atmosphere has been evenly distributed. It will, therefore, be necessary to trace the successive maxima and minima of atmospheric pressure from one station only. They are recorded in the following Table. TABLE III.—Showing the successive Maxima and Mikima TtEADiNGS of the Baeobieter in London, at the Level of the Sea. Difiference between Month, Day, and successive Readings. successive HOUE. Maxima and Minima. Increase. Decrease. 1854 : in. in. in. July 1-9 a.m. - 29-927 •088 2 - 11 a.m. - 30-015 •395 4 - 3 p.m. - 29-620 -210 8 - noon 29-830 •043 9-1 p.m. - 29-787 •190 10-9 p.m. - 29-977 •122 12 - 9 a.m. - 29-855 -051 13 - noon 29-906 •116 14 - 3 p.m. - 29-790 •358 16 - 11 a.m. - 30-148 •138 18 - 3 p.m. - 30-010 •262 22 - 9 a.m. - 30-272 •172 25 - noon 30-100 •160 28 - 9 a.m. - 30-260 •558 31 - 9 p.m. - 29*702 •448 Aug. 6 - 11 p.m - 30-150 •305 10-3 p.m. - 29-845 •182 11 - 9 p.m. - 30-027 •235 14-9 a.m. - 29•792 •423 18 - 9 p.m. - 30-215 •405 21 - 9 p.m. - 29-810 •385 23 - 9 a.m. - 30-195 •239 24-3 p.m. - 29-956 •559 28 - 9 a.m. - 30-515 •328 30-9 p.m. - 30-187 •261 Sept. 3 9 a.m. - 30-448