PROTOZOA ly^ 



about in jerky spasms ; many move by sinuous and beautiful undulations. 

 Others again push out portions of their own bodies and let their proto- 

 plasm stream into the protuberance — thus slowly flowing from place to 

 place. In order to get some idea of this beautiful, obscure and animated 

 crowd it is only necessary to smear a little of the mucus from the crop, 

 intestine, cloaca or other body fluid of a bird on to a wet slide and focus 

 the microscope. 



Trypanosoma gallinarum from the fowl 

 (after Wenyon) (x 2000) 



