AMOEBJ5 OF THE INTESTINAL TRACT. 163 



servers have shown that Entamceba Mstolytica is 

 capable of producing the lesions of dysentery when 

 injected or fed to susceptible animals. A great 

 amount of work has been accomplished by Musgrave, 

 and Musgrave and Clegg, in experimental dysentery, 

 and it is greatly to be regretted that their work 

 cannot be used in proving the pathogenic relation 

 of specific amoebae to dysentery, for the reason that 

 they failed to recognize species. As both Entamceba 

 histolytica and Entamceba tetragena occur in the 

 Philippine Islands, these authors may have been deal- 

 ing with both species, but their results cannot be 

 definitely attributed to either one. They have, how- 

 ever, succeeded in producing typical dysentery lesions 

 in the intestine of monkeys, and abscess of the liver 

 in the same animals. 



Schaudinn experimented upon cats and concluded 

 from feeding experiments that only the spores of 

 Ent amoeba histolytica were capable of causing dysen- 

 tery in these animals. He thus describes his ex- 

 periments which prove this point. After stating that 

 he obtained his material from a case of dysentery 

 which became infected in China, he says: 



:< From this case I took a small quantity of feces, 

 divided it into three parts, dried each in the air, and 

 mixed with it sufficient water for about 20 crush 



