278 



Cholera in Relation to Certain Physical Phenomena. 



[part I. 



(2) JUBBULPORE. 



Proceeding another 100 miles or so southwards, we come to the large station of 

 Jubbulpore in the Central Provinces. Here the month of August loses its place, for 

 out of 690 cases of the disease recorded among troops and prisoners during the last 

 21 years, 340 occurred in July. By inadvertence the cholera returns which had been 

 furnished regarding the general population with the water-level registers for the last five 

 years, were included in the statistics of this station in the previous tables, but it will 

 be seen that in the accompanying table the troops and prisoners have been shown 

 separate from the general population. In both instances it is July that occupies the 

 first place as to cholera-prevalence. 



TABLE LXIII. 



A stateTnent of the average Monthly Water-level, Rainfall, Relative Humidity, 

 Temperature and the total Cholera at Juhhulpon^e. 



In looking over the General Table (L), the distinguishing peculiarity that is readily 

 evident is the circumstance that this station gets a heavier mean rainfall in July than 

 any of the other stations in the group, its June rainfall also being heavy. 



In this station, also, one of the two months of maximum relative humidity 

 corresponds with the maximum cholera month ; beyond this, however, no close con- 

 nection can be traced. The month of maximum cholera-prevalence corresponds with 

 one of the months of lowest atmospheric pressure^ as it was seen to do in other stations 

 of this area, and the maximum pressure agrees generally with the minimum cholera 

 months. The highest monthly mean temperature, however, does not coincide with the 

 maximum cholera month, the average temperature of July being 12 degrees lower than 

 the maximum, which occurs in May. The water-level register at this station has been 

 very regularly kept up by Dr. Rice for six years, the monthly mean of which period will 

 be found in the above table. The level of the well is very rapidly affected by the rain- 



