1900.] 



Capfc. L. Rogers — Malaria North of Calcutta. 



91 



The following table shows the percentage of persons found to suffer 

 from enlargement of the spleen in each municipality. They are arranged 

 in order from above downwards as they are situated on the map from 

 north to south, while the westernly ones which lie on the east bank 

 of the Hooghly are placed above, and the easternly ones, which lie 

 at a little distance from the river are placed below in the following 

 table : — 



TABLE 



Municipality. 



I. 



Spleen Pei 



Naihati 



19-9 



Bhatpara 



20-0 



Garulia 



33-8 



North Barrackpore 



36-5 



Titagarh 



37-8 



South Barrackpore, West 



25-2 



Kamarhati 



18-8 



Baranagar 



17-8 



Chiipore-Oossipore 



11-2 



Average 



24-5 



(G-obardanga) ... 



(55-6) 



(Basirhat) 



(52-8) 



Baraset ... 



529 



South Barrackpore, East 



56-0 



Kamarhati, East 



34-8 



North Dum Dum 



68-1 



South Dum Dum 



32-3 



Maniktolla 



132 



Average 



41-0 



A glance at the above table (which in the full paper is illustrated 

 by a shaded map) shows that the places which are situated on the east 

 bank of the Hooghly river have a much lower spleen rate than those 

 further to the east, although the last five are but from one to two 

 miles from the river. The question arises is to whether the riverine 

 parts are exceptionally healthy or the inland portions especially un- 

 healthy for this part of Bengal, and in order to settle ihis I examined 

 several hundred people in Basirhat and Gobardanga, which are situated 

 some 25 miles further to the east, and found their spleen rates to be 

 over 50 per cent. It is evident, then, that the riverine portions are 



