ON THE INFLUENCE OF WEATHER UPON MORTALITY. 



317 



Months. 



Mean of the Six Years. 



Dry Cold. 



Humid Cold. 



Mean 

 Temp. 



Eain- 

 faU. 



Humi- 

 dity. 



Mor- 

 tality. 



Mean. 

 Temp. 



Rain- 

 faU. 



Humi- 

 dity. 



Mor- 

 tality. 



Mean 

 Temp. 



Rain- 

 fall. 



Humi- 

 cUty. 



Mor- 

 tality. 



January, . . . 

 February, . . . 

 March, .... 

 April, .... 



37-4 

 38-2 

 39-8 

 43-2 



3-82 

 2-32 

 3-55 

 2-1] 



88 

 87 

 86 

 82 



265-3 



257-4 

 249-8 



242-8 



(357 

 1 39-3 

 J 39-3 

 \40-l 

 / 38-4 

 \39-5 

 /41-5 

 \43-8 



277 

 2-98 

 1-54 

 1-88 

 3-52 

 1-95 

 1-18 

 1-86 



87 

 86 

 89 

 89 

 86 

 85 

 82 

 78 



253-2 

 214-0 

 250-1 

 251-3 

 283-2 

 257-8 

 290-2 

 227-1 



35-5 

 39-6 

 39-5 



40-5 

 37-8 

 39-2 

 41-3 

 44-6 



4-56 

 4-21 

 3-32 

 3-38 

 3-63 

 294 

 3-20 

 2-99 



89 

 87 

 88 

 88 

 88 

 86 

 80 

 83 



280-8 

 243-4 

 228-1 

 246-9 

 2567 

 250-0 

 2227 

 2500 



Means, . . 



39-7 



2-95 



86 



253-8 



397 



2-21 



85-2 



253-4 



397 



3-53 



86-1 



247-3 



In this table there is a tendency to support the general belief that a dry cold 

 is more fatal than a humid cold ; the four Januaries, it will be seen, oppose the 

 idea of such a law, the greater death-rate being with the two humid months ; 

 two of the Aprils also conflict with the generally accepted law, the humid month, 

 even with a rather higher mean temperature, having the greater mortality. In 

 the months of March, and again in one of the comparisons of the months of 

 April, it will be noticed, that whilst the order of the months is correct as to the 

 amount of moisture indicated by the rain-fall in inches, nevertheless, if the 

 humidity as deduced by Mr Glaisher's tables had been strictly taken as the test, 

 the order ought to have been reversed. But it often happens that, as in the 

 instances above referred to, whilst the amount of rain which may have fallen 

 during a month may be higher than the mean of the six corresponding months, 

 nevertheless, the amount of moisture in the atmosphere, as exhibited by a re- 

 ference to Mr Glaisher's tables, may be below the average humidity of the six 

 corresponding months. It behoves us, then, to compare both of these indices to 

 the amount of moisture in the atmosphere with the temperatures below the 

 means of the six corresponding months separately, and this is done in the follow- 



ing tables : — 



Months in which both the Mean Temperature and the 

 Rainfall are below the Mean of the Six cor- 

 responding Months. 



Mortality. 



January 1857, 253-2 



1861, 304-1 



February 1858, 237-7 



March 1857, 250-0 



1858, 257-8 



1860, 283-2 



April 1860, 290-2 



Mean, 



268-0 



Months in which the Mean Temperature is below, but 



the Rainfall above the Mean of the Six 



corresponding Months. 



Mortality. 



January 1860, 2808 



February 1860, 330-6 



March 1862, 2567 



April 1857, 243-6 



April 1859, 222-7 



Mean, 



266-9 



