OF THE ALIIMENTARY TRACT 53 



Thompson (1926) produced experimental infection 

 of rabbits. 



Lynch (1915 and 1928), Brug (1919), Kessel 

 (1923), and Chiang (1925), have brought about ex- 

 perimental infection of rats by feeding the cysts. 





Fig. 3. — Experimental Amoebic Ulcer of the Colon of a Rat. 



While the disease produced in kittens is similar 

 to amebic dysentery in man, it is commonly very 

 acute and it is practically always fatal. There is 

 not the non-dysenteric phase as in man, consequently 

 there is no encystment of the amoeba and this animal 



