PARASITTC PROTOZOA IN RELATION TO THE WAR. 3O3 



faeces. Sections of the intestine showed epithehal erosion and 

 ulcerative conditions. Similar apjiearances were found in human 

 intestines examined post morfeiii. Rats, mice, and cats can act 

 as reservoirs of the disease. By contaminating the food or drink 

 of man with their excrement, they may propagate lanibliasis. 

 Mathis and others have found lanibliasis among patients whose 

 homes were infesied with rodents. Healthy human carriers are 

 also known. Bismuth salicylate was found elfective in reducing 

 the number of ])arasites, the cysts disappearing in some cases. 

 The virulence of diiferent strains of Giordia varies, and the cysts 

 can remain infective for at least three months. 



Prozvazekia have been seen in human stools in various parts 

 of the world. Several species have been diiTerentiated, but on 

 slight differences which are really only variations. The flagellates 

 have an anterior flagellum and a lateral trailing flagellum. There 

 is a large blepharoplast internally, near the anterior end, in the 

 neighbourhood of a slight depression or cytostome. 



Cercomonas hominis and C. parva occurred in some of the 

 dysenteric stools examined by me. They were not very common 



l-tg. 10. 



The parasites each had one flagellum anteriorly, and another 

 flagellum passed posteriorly over the body ; their nucleus was 

 distinct and their movements were active. 



The complete elimination of the above-mentioned intestinal 

 flagellates from the body appears to be difficult, and the treatments 

 brieflv mentioned have not been particularly successful. 



Intestinal Spiroch^.tes. 



Spirochccta eurygyrata occurred in the stools of various 

 patients, many of whom suffered from intestinal disturbances. 

 Much morphological variation due to growth and division was 

 found. Spirocha-ta eurygyrata has tapering ends, measures up to 

 15/i. long, and is about 0.25/x broad. It contains a diff'use nucleus, 

 consisting of chromatinic granules (Fig. 10.) The number of 

 coils or waves is variable, de])ending on the rate of movement and 

 thickness of the organism. The formation of coccoid bodies was 

 seen. The number of spirochretes in a stool varies from day to 



