224 



Cholera in Relation to Certain Physical Phenoinena. 

 TABLE XXV. 



[part I. 



Comparison of periods of maximuTn, minimuTn, and intermediate Rainfall^ 



and Cholera-prevalence. 



Taking the period of maximum prevalence, we find that it ranges over one 

 month of minimum and three of intermediate rainfall ; and if we compare the pheno- 

 mena of these months more closely, the want of any direct definite relation between 

 them is even more distinctly brought out. 



TABLE XXVI. 



Comparison of Rainfall and Choleror-prevalence from February to May. 



Taking the data up to April, there might be some grounds for ascribing significance 

 to the correspondence between increased rainfall and increased prevalence ; but when 

 we come to May, we find a continued increase of rainfall — and an increase, too, 

 fairly comparable with those preceding it in amount — coincident with marked decrease 

 in place of increase in prevalence. A similar want of correspondence is manifest in 

 the data of the months of intermediate prevalence. 



