324 DR E. E. SCORE SBY-JACKSON 



summer months, the mean height of the barometer in seten was below, and in 

 eleven above 29-843 ; and of the eighteen autumn months, the mean height of the 

 barometer in seven was below, and in eleven above 29-843. The average mortality 

 of these several groups of months is seen thus : — 



Winter. 



Average mortality of ten winter months, each with a mean height of barometer below 29-843, 258-6 

 eight „ „ above ... 254-8 



Excess of mortality with low barometer, 3-8 



Spring. 



ten spring months, each with a mean height of barometer below 29-843, 238-7 

 eight ,, „ above ... 235-8 



Excess of mortality with low barometer, 29 



Summer. 



seven summer months, each with a mean height of bar. below 29843, 200-97 



eleven ,, „ above ... 200-76 



arom 



Excess of mortality with low b eter, 0-21 



Autumn. 



eleven autumn months, each with a mean height of bar. above 29843, 214-5 

 seven „ ,, below ... 197-0 



Excess of mortality with high barometer, 1 7'5 



It would seem, then, that over the whole year, and in the seasons of winter, 

 spring, and summer, the relationship between the mean monthly height of the 

 barometer and the death-rate is invei^se ; but that in autumn it is direct. And I 

 think that, although it is not a law without exceptions, there is an indication 

 of a law, if the data be sufficient to determine it, of an increased mortality with a 

 low barometer. But I must speak guardedly on this point, because the result of 

 the inquiry differs from those obtained by many acute investigators ; and I think 

 it right to mention particularly that it is opposed to the opinion of talented 

 investigators who have made similar observations in Berlin, Dresden, and Paris. 

 And I may mention, moreover, that the results which are shown with reference 

 to the influence of drought and humidity upon the death-rate from all causes are 

 also opposed to those obtained by some of the same observers. At the close of 

 the paper I shall present the principal data in a different form, in order to test still 

 more rigidly the accuracy of these inductions. 





