ROYAL ASIATIC SOCIETY. 



177 



reside at places which enjoy a much higher reputation in this 

 respect. The Caffre soldiers appear to me to resemble Euro- 

 peans in constitution, character and habits more closely than 

 do any of the other natives with whom they are mixed. If I 

 am correct in this, the observations made on these men will be 

 to a considerable extent applicable to English residents. 



In the diagrams appended to this, I have projected the 

 sanitary phenomena of several individual years, and also those 

 which result from taking the average of all to which mv data 

 extend. The plan of these diagrams is simply this The 

 horizontal lines denote days of sickness due to a hundred men, 

 and are marked from ten to ten days, the vertical lines (not 

 the spaces between) denote the several months. The results 

 appear to me very interesting. To revert to that which shows 

 the average of eight years, we find, 



That from January to May, the health of the station gra- 

 dually improves ; that it decreases during June, July and 

 August ; improves during September and October, the latter 

 being the healthiest month in the year ; and then rises rapidly 

 to December which is the worst, whence it again falls as be- 

 fore ; that is, this table also shows four distinctly marked 

 seasons. 



These seasons however are not synchronic with those indi- 

 cated by the greater or less quantity of rain, thus, the great 

 dry weather extends from May to October, the health of the 

 station is however bad from 'June to August, and rapidly im- 

 proves in September and October. 



The great rains extend from the middle of October to 

 December, the first of these months is the most healthy, the 

 two latter are among the least so of the whole year. 



The lesser dry weather extends from January to the mid- 

 dle of March, and the latter rains from that time till May, and 



