CALCUTTA (1894-1896) 



191 



inoculated ; in 76, inoculated and non-inoculated 

 were living together ; but of these 76 houses, 6 are 

 excluded from the table of results, because the in- 

 oculated in them were so few — less than one-tenth 

 of the household — that their escape from cholera 

 might be called chance. The cholera came, and 

 left behind it this fact : — 



654 uninoculated individuals had 71 deaths 



= 1 0.86 per cent. 

 402 inoculated in the same households had 

 12 deaths = 2.99 per cent. 



If we add the 6 houses which Dr Simpson 

 excludes, we find that in 77 houses there were 89 

 deaths from cholera, 77 being among the uninocu- 

 lated and 12 among the inoculated. 



Moreover, of these 12 deaths, 5 occurred during 

 the first five days after inoculation — that is to say, 

 during the period in which the protective influence 

 of the vaccine was still incomplete. Then came a 

 period of more than a year, during which the un- 

 inoculated had 42 deaths, and the inoculated had one 

 death. The remaining 6 of the 1 2 deaths occurred 

 more than a year after inoculation, and 5 of these 

 6 had received only one inoculation of the weak 

 vaccine that was used early in 1894. 



Take a good instance that came at the very 

 beginning of the work : — 



" A local epidemic took place around two tanks 

 in Kattal Began bustec, ward 19, occupied by about 

 200 people. In this bus tee, about the end of March, 



