ENGLISH CHOLERA 295 



action on the milk and not on the body that the bacteria 

 acquire their dangerous properties. In the child toxic 

 efifects may result from substances that produce little or 

 no effect on the adult. 



Baginsky examined forty-three cases of summer diarrhoea, 

 but did not find any organisms of a specific character. 

 The general conclusion he comes to is that several kinds 

 of saprophytic bacteria may produce the disease under 

 favourable conditions. The severe cases of diarrhoea seem 

 to be due to poisons developed by bacteria from the proteid 

 constituents of the food. Booker isolated altogether thirty- 

 three forms of bacteria from cases of infantile diarrhoea. 

 There was great variety, but no constancy in the types 

 found. 



Jeffries and Baginsky were not able to confirm Lesage's 

 statement that the green diarrhoea of children is asso- 

 ciated with the presence of a specific organism. 



The researches of Vaughan upon stale and sour milk 

 resulting in the isolation of tyrotoxicon have a great 

 bearing upon infantile diarrhoea. The symptoms of tyro- 

 toxicon poisoning resemble those of cholera infantum. 

 Vaughan also obtained toxic bodies from cultures of 

 Booker's bacteria, which produced vomiting, purging, and 

 sometimes death in dogs. 



