INFUSORIA 



over two opposite points of the brim. The cilia them- 

 selves cannot be distinguished, but their optical expres- 

 sion is curious. At the two opposite points of the circu- 

 lar margin, as seen in perspective when slightly inclined 

 toward the observer viz., at those points where the cilia, 

 from their position with regard to the eye, would be 

 crowded together there are seen two dark dashes, repre- 

 senting, doubtless, two ciliary waves, but which have all 



VORTICBM^ffl!. 



the appearance of tangible objects, sometimes withdrawn, 

 sometimes protruded, and often vibrating with a rapid 

 snatching movement. 



These vases are of the usual appearance in Infusoria. 

 Their substance is the clear transparent colorless sarcode, 

 but it contains within it more or less of the cloudy neb- 

 ulous matter which we have been lately familiar with. 

 There are several globular vesicles or vacuoles, some 

 ready to imbibe color from pigment, and others already 

 occupied with brown food, while in each case we see, 



