PART I.] Prevalence of Cholera in Relation to Season and Rainfall. 



267 



TABLE LIIL— (ctmimued.) 



The pi^evalence of Cholera according to Seasons, together with the seasonal 

 Rainfall at 25 Stations in Central and Upper India. 



In comparing the two tables, it will be remarked that in the endemic area the 

 first five months of the year furnish in most places more than half of the whole year's 

 cholera — in some of them very considerably more- — the average contribution of the 

 stations, including Calcutta, being 59-9 per cent., or excluding the statistics of the 

 general population of Calcutta, 54-3. The aggregate cholera of the same season — -the 

 "spring cholera" — in the non-endemic group of stations, yields, however, a very different 

 proportion, viz., 16*8 per cent, of the total of the yearly period. Further, if the 

 cholera of the rainy period be compared with the cholera of the rest of the year, we 

 find that whereas in the endemic area the rainy season furnishes only 28 "8 per cent, 

 and the dry season (October to May) 71*2 per cent, of the total annual cholera, in the 

 non-endemic area the same seasons respectively furnish 76-8 and 23*2 per cent. These 

 facts will become more evident when arranged in tabular form. 



