270 



Cholera in Relation to Certain Physical Phenomena. 



[part I. 



CHAPTER II. 



ANALYSIS OF DATA FURNISHED BY INDIVIDUAL STATIONS SELECTED TO ILLUSTRATE CHOLERA- 

 PREVALENCE AND PHYSICAL PHENOMENA IN NON-ENDEMIC AREAS. 



(a) Selected Stations— Oudh and the North-Western Provinces. 

 Following the plan adopted when referring to the endemic area, we now propose to 

 subdivide the group of stations which have been described collective!}' in the previous 

 chapter, and which may be said to represent in a general way the physical conditions and 

 predisposition to the occurrence of cholera of those portions of Upper and Central India 

 which have been defined as constituting the non-endemic area of the Presidency. 



Owing, however, to the very varied character of the provinces in which the selected 

 stations are located, and to their differences in telluric conditions and climate, especially as 

 regards rainfall and range of temperature, it becomes a matter of some difficulty to classify 

 them satisfactorily. On this account it seems best to take them according to their 

 geographical position, proceeding in a north and south-westerly direction from Dinapore. 



(1) Benares. 



The first large station of importance is the City of Benares. This can scarcely be 

 said to be beyond the borders of the endemic area, and its monthly cholera chart for 

 the last 5 1 years would of itself be sufficient almost to imply as much ; indeed the disease 

 is seldom absent either from the city or the district. In the previous chapter it was 

 shown that cholera, instead of being diffused so generally over the year as in the endemic 

 area and reaching its maximum in March or April, flourished far more during August and 

 the rainy season generally in the non-endemic area. At this station this peculiarity is 

 not very marked ; though it is true that considerably more cholera has occurred in 

 August than in April, still the history of the cholera of the latter month proves that the 

 conditions which prevail during March, April and May in the more strictly endemic area 

 are also influential during the same periods at Benares. 



TABLE LVI. 



T}m average Monthly Rainfall, Relative Humidity, Temperature, Atmospheric Pressure, 

 and the total Cholera ammig European and Native troops and prisoners at 

 BeTiaree. 



