454 INFUSORIA, 



Enchelis Mull., 



Where the body is oblong, softer, and less determined than that of a 

 Vibrio. 



In Cyclidium it is flat and oval. 



In Paramecium it is flat and oblong. 



In KoLPODA it is flat and sinuous. 



In GoNiUM it is flat and angular. 



And in Bursaria, hollow like a sac. 



The most singular genus of the Avhole is the 



Proteus, Lin. 



No determinate form can be assigned to them; their figure changes 

 every instant, and is sometimes rounded, sometimes divided and sub- 

 divided into thongs, in the most odd and singular manner *. 



MONAS, Mull., 



The monades, viewed under the microscope, resemble points mov- 

 ing with great rapidity, although destitute of any apparent organ of 

 motion. 



VOLVOX. 



A globular body revolving on its axis, and frequently containing 

 smaller globules, which are doubtless the continuation of the race. 



* Froteus diffluens, Rods. Ill, ci ; Encyc. I, l,a— m; — Prot fenax, Mull., Inf. 

 II, 13—18 ; Encyc, I, 2, a— f. 



For other details concerning all these animals, see the posthumous work of Othon 

 Frederick Miiller, entitled Animalcula Infusoria, the plates of which have be«n 

 copied in the Encyc. M^thodique. See also Roes., Ill, and for the classification, the 

 work already quoted of M. Bory Saint Vincent. 



t M. Audouin and M. Edwards, Ann. des So. Nat. ; XI, pi., XVI, have adopted 

 this opinion of M. Grant. 



