ON THE INFLUENCE OF WEATHER UPON MORTALITY. 



341 



lortality from bronchitis in 1860, 

 Mortality from bronchitis in 1859, 

 lean temperature in 1860, . . 

 lean temperature in 1859, . . 

 lonthly range of temperature \ 



in 1860 / 



[onthly range of temperature \ 

 in 1859, ......./ 



[ean of the daily ranges of tem- 

 perature in 1860, .... 



[can of the daily ranges of tem- 

 perature of 1859, .... 



!ean height of the barometer ) 



in 1860 J 



!ean height of the barometer \ 



in 1859 ) 



onthly range of the barometer ) 



in 1860, / 



onthly range of the barometer ) 



in 1859, / 



mount of rain in inches in 1860, 

 ■nount of rain in inches in 1859, 

 0. of days on which N., N.E., ) 

 and E. winds blew in 1860, / 

 3. of days on which N., N.E., 1 

 and E. winds blew in 1859, j 



Jan. 



36-0 

 17-6 

 35-5 

 39-6 



28-5 

 27-1 



8-1 



9-6 

 29-529 

 29-864 



1-810 



1855 



4-56 

 4-21 



90 

 1-0 



Feb. 



62-0 

 198 

 340 

 40-5 



35-0 

 29-0 

 10-7 



9-8 

 29-932 

 29-709 



2-079 



1-375 



2-69 

 3-38 



8-0 



2-0 



March. 



41-2 

 14-8 

 38-4 

 430 



27-0 

 33-2 

 11-5 

 10-9 

 29-639 

 29-707 

 1-93] 



1-270 



3-52 

 418 



6-0 

 40 



April. 



43-9 

 13-3 

 41-5 

 41-3 



32-2 

 39-0 

 14-9 

 13-5 

 29-978 

 29-751 

 1-860 



1-289 



1-18 

 3-20 



130 

 120 



May. 



.June. 



July. 



26-8 

 10-0 

 50-2 

 61-9 



35-5 

 42-4 

 15-0 

 19-7 

 29-831 

 30-046 

 1-228 



0-498 



2-18 

 0-29 



8-0 

 11-0 



17-2 



6-8 



530 



56-6 



27-5 

 35-3 

 13-3 

 16-1 

 29-674 

 29-934 

 1-102 



0-653 



434 

 2-04 



110 

 11-0 



14-2 



6-0 



67-3 



59-0 



.30-9 

 32-4 

 14-5 

 14-3 

 29-988 

 30-050 

 0-745 



1-083 



1-82 

 2-76 



9-0 j 

 7-0 



August. 



Sept. Oct. 



9-3 



59 



54-4 



57-8 



27-1 

 30-7 

 12-8 

 14-7 

 29-575 

 29-850 

 1-080 



1167 



3-79 



2-27 



6-0 

 1-0 



8-9 



6-8 

 50-2 

 62-3 



35-0 

 28-2 

 13-8 

 13-6 

 29-868 

 29-722 

 1-165 



1-063 



1-92 

 3-21 



7-0 

 3-0 



11-7 



6-0 



46-0 



45-8 



29-6 

 43-8 

 10-9 

 120 

 29-784 

 29-667 

 1-261 



1-236 



5-14 

 4-60 



40 

 10-0 



Nov. 



21-7 



6-8 



39-1 



39-4 



26-5 

 26-9 



8-1 

 10-4 

 29-919 

 29-855 



1-641 



2-129 



2-83 

 3-37 



13-0 

 6-0 



Dec. 



26-0 

 28-8 

 34-] 

 340 



40-8 

 35-5 



8-1 



8-7 

 29-709 

 29-651 



1-426 



1-853 



3-91 

 8-66 



110 



8-0 



Year. 



26 6 

 11-9 

 44-5 

 46-7 



81-3 

 33-6 

 11-8 

 12-7 

 29-785 

 29-817 

 1-444 



1-289 



87-88 

 3717 



1050 

 760 



If the foregoing tables are to be trusted, it would seem— 



1. That there is an inverse relationship between temperature and the death- 

 rate from bronchitis in all seasons, but that this is more remarkable in the winter 

 months, and especially when the cold is severe and protracted. 



2. That possibly there may be an inverse relationship between the monthly 

 range of temperature and the death-rate from bronchitis over the whole year, but 

 the relationship varies with the season. 



3. That the relationship between the daily range of temperature and the 

 death-rate from bronchitis also varies with the season ; but there is no indication 

 of any constant correspondence. 



4. That possibly the relationship between the mean height of the barometer 

 and the death-rate from bronchitis may be inverse in summer and direct during 

 the remainder of the year. And that there is no constant relationship between 

 the death-rate from bronchitis and the monthly range of the barometer. 



5. That the rainfall does not influence the death-rate from bronchitis. To 

 the last two suggestions it may be added, that although 'the tables do not indi- 

 cate any constant correspondence between them, nevertheless it is highly pro- 

 bable that the state of the barometer, and the hygrometric condition of the atmo- 

 sphere, do exert a powerful influence upon the mortality from bronchitis, and 

 that the reason why such influence is not more distinctly visible is this, that whilst 

 a dry atmosphere with a high barometer is prejudicial to one class of bronchitic 

 patients it favours another, and vice versa j so that, the one class balancing the 

 other, the influence is not discoverable upon the whole death-rate. 



VOL. XXIII. PAUT II. 5 ^ 



