24 



PROTOZOA 



[CH. 



away the shell with dilute acid so as to expose the proper body of 

 the animal, it will be seen that this is made up of separate parts 



FIG. 5. Polystomella crispa. Highly magnified. After M. S. Schultze. 



1. Shell. 2. Pseudopodia. 8. A mass of protoplasm formed by the fusion 



of pseudopodia. 



each united to the next one by two or three little bridges of proto- 

 plasm, and arranged one behind the other in a spiral series. This 

 is the first example we have met with of the repetition of similar 



