CLASSIFICATION. 69 



it has once swallowed up, " Avoid it, pass not by it, turn 

 from it, and pass away." The crystal cup of the Vorticella 

 is not the only cup of death. It kills but the body: there 

 is another cup that kills both body and soul. " Look not 

 on the wine when it is red, when it giveth his colour in the 

 cup, when it moveth itself aright : at the last it biteth like 

 a serpent, and stingeth like an adder/' 



The next that came under my notice was also in fresh- 

 water Vorticella stentoria. This is quite a giant among 

 this pigmy race, for when fully developed it measures not 

 half a fathom, nor half a foot, nor half an inch, but half 

 a line, which is the twenty-fourth part of an inch. This, 

 as well as some others, has been separated from the Vorti- 

 cella by generic name, and there is good ground for the 

 distinction, for it is not fixed by a stem like the Vorticella 

 proper, but is without a stem, and in shape resembles a 

 trumpet or horn, not unlike the figure of a cornucopia. 

 Though generally seen in a state of attachment, it can dis- 

 engage itself and launch into the deep, and swim with con- 

 siderable rapidity, for the numerous cilia that adorn its 

 ample mouth act as so many paddles. When swimming, 

 the sharp point of attachment is drawn up, so that instead 

 of resembling a horn it is like a round-bottomed bag. The 



