BY DR. OSCAR KATZ. 



189' 



of these, at an incubation of from 20°-25T. (68°-77°F.), 

 sufficiently moist for a considerable length of time. At higher 



Fig. 1. 



Fig. 2. 



temperatures up to blood-heat the development of micro-organisms 

 capable of cultivation of boiled potato is so much accelerated that 



