102 



intr(idu(;ti()X to zoology. 



Tlio Steiitoi- is called 

 the Trumpet animalcule, 

 and is somewhat larger 

 than the vorticella. It 

 is frequently seen in 

 large numbers. In all 

 essential respects it is 

 jnucli like the vorti- 

 cella, having the ciliated 

 peristome, food balls, 

 and conti-actile vesicle, 

 and ingesting food in the 

 same wav- It lias no 

 stalk, but, while feeding, 

 attaches itself tn some support by means of the small 

 end of the bell, or trumpet. When so attached, the 

 body elongates, tlius giving the trumpet appearance, 

 and the wide end of the trumpet can be turned in 

 any direction. When not attached to a support, the 

 body is U-shajjed in section, and swims about freely 

 by means of cilia which cover the surface of the body. 



These cilia are much 

 smaller than those upon 

 the peristome. 



The Paramipciuin 

 may Ije found in water 

 that has become foul by 

 the decay (jf animal or 

 vegetable material. 



A jar of water in 

 which a. clam has l>een 

 left to die is sui'e to be 

 a very prolific source of 

 Paramcficia. 



From its sliai)e, the 

 ParaiiKjecium is called the slipjier animalcule. It is 

 ciliated all (jver its l)ody, and swims a'onul freely. 



PAHAMUaiTTM. 



