Marvels of Pond-Life. 



109 



food came near the corkscrew entrance to the mouth, 

 down it went, and if conspicuous for colour, was 

 subsequently seen apparently embedded in little 

 cavities, which Ehrenberg supposed were separate 

 stomachs, although that theory is now rejected. One 

 advantage of viewing these objects in a sufficient 



A, B, C, D, Stentor polymorphus in different degrees of ex- 

 pansion. A large specimen is one twenty-fourth of an inch 

 long. 



quantity of water, to leave them in freedom, is that 

 they frequently turn themselves, so that you can see 

 right down into them ; and the drawing given in the 

 frontispiece represents such a view, which is the most 

 favorable for the exhibition of the mouth. To make 



