POISONS AND THEIR PREVENTION 175 



the disease, must have been already infected when 

 the injections were made; the eleventh animal, how- 

 ever, undoubtedly contracted the disease after and 

 in spite of the injection. 



" Considering," continues Dr. Stanley, " the usual 

 excessive mortality during an outbreak of this disease, 

 the result may almost be compared to the success of 

 vaccination against small-pox. Three young bullocks, 

 each having received 20 cubic centimetres of cattle- 

 plague gall, were purposely exposed to severe infection. 

 They remained well, while unprotected animals around 

 them died of the disease." 



In the domain of immunity there is, however, 

 no more fascinating or interesting story than that 

 which deals with the discovery and elaboration of 

 a cure for snake-bites, a discovery which, while 

 attracting but comparatively little attention in this 

 country, should prove of paramount importance to 

 our fellow-subjects in the great Indian Empire. 

 The significance to India of Professor Calmette's 

 discovery of a specific cure for snake-poison may 

 be gathered, indeed, from the statistics which have 

 been compiled of the number of deaths attributed 

 by Indian officials to this cause alone, amounting, 

 it is said, to some 22,000 annually. 



The Pasteur Institute in Paris has despatched 

 many pioneers of science to various quarters of 

 the globe, but perhaps no scientific missionary has 



