PASTEUR AND AFTER PASTEUR 



recording cholera occurrences for a certain period 

 to come ; and by 1896 a mass of material was 

 collected." 



That is the way to judge the worth of a protec- 

 tive treatment. There must be, in one and the 

 same community, during one and the same epidemic, 

 lives protected and lives non-protected : and these 

 two sets of lives must be alike in everything else- 

 food and clothing and health and habits and 

 surroundings. Then, let Nature decide. Put the 

 problem, fairly and squarely, to her. Offer to 

 Nature, for a demonstration, tenement - houses, 

 jails, tea-gardens, regiments, boarding-schools, 

 villages ; and follow carefully the result. Nature 

 demonstrated, very clearly, that the protected were 

 indeed protected against cholera. Out of many 

 examples, take the results in Calcutta, and on the 

 Cachar Tea Estates. 



Calcutta. 



From 1894 to 1896, the work in Calcutta was 

 supervised by Dr. W. J. R. Simpson, C.M.G., now 

 Professor of Hygiene in King's College, London, 

 then Health Officer of Calcutta. The service was 

 under the direction of the Municipal Health Office. 

 The utmost strictness of inspection, visitation, and 

 analysis of cases, was maintained. 



From the end of March, 1894, to the end of 



