CLASSIFICATION AND NOMENCLATURE. 35 



for this amoeba the genus Entamceba because they 

 considered that these organisms differed both in 

 morphology and life history from the fresh water 

 amoebae. They, described very minutely the mor- 

 phology and method of reproduction of this species 

 and their investigations directed the attention of 

 other workers to the occurrence of amoebae in health 

 and in diseases other than dysentery. However, they 

 were not successful in differentiating the pathogenic 

 and harmless amoebae. 



In 1900, Strong and Musgrave recognized two 

 species of amoebae occurring in their patients in 

 Manila, and state that with the harmless amoeba, 

 which they call Amoeba coli, they were never able to 

 produce dysentery in cats ; while with the pathogenic 

 amoeba, Amoeba dy sentence, they had no difficulty 

 in producing the disease in cats by the injection of 

 f eces or the contents of liver abscesses containing the 

 living parasites. 



While, according to Schaudinn, the first in- 

 vestigator to clearly identify and describe a patho- 

 genic and non-pathogenic species of amoeba in man 

 was Jiirgens, in 1902, I believe that to Strong and 

 Musgrave really belongs the credit of making this 

 observation, as their work was published in 1900, while 

 that of Jiirgens did not appear until 1902. There is 

 but little doubt that Strong and Musgrave actually 



