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GUIDE TO THE STUDY 



chiefly in obtaining food, as suggested by Boeck. The cytoplasm 

 contains bacteria and other food inclusions. 



The cysts are small, refringent, and pear shaped, with a 

 transparent wall which is thicker at the anterior end. They 

 measure from 7 to 9/* in length by 4.5 to Q/x in width. In the 



Fig. 22. — Intestinal flagellates of the chicken. 1, Eutrichomastix galUnarum; 

 2, Trichomonas galUnarum; 3, Trichomonas eberthi; 4, Chilomastix galUnarum, 

 motile and cyst stages. (Figures 1-3 from Martin and Robertson, Figs. 4a and 4b 

 from Boeck and Tanabe.) 



granular cytoplasm may be seen the large rounded or oval nucleus 

 and the outlines of the cytostome with its fibrillar apparatus. 

 Trichomonas hominis is said to be the most common flagellate 

 affecting man. Statistics are not altogether reliable on account 

 of the above-mentioned confusion in many cases with Chilomastix 

 mesnili. More available species for study are Trichomonas 

 augusta and Trichomonas batrachorum from the frog. Mount in a 

 drop of water the intestinal content from the juncture of the 

 small and the large intestine. The trichomonads may be seen as 



