TWO YOUNG NATURALISTS. 2I5 



myriads in filthy water; Vorticellse, posiiig their 

 globose bodies and open mouth, at the end of a long 

 twisted stalk, something after the fashion of a spiral 

 spring. 



For each demonstration, Le*on had recourse to a 



GBOTJP OF MONADS Elichc ItJS pl<pa. 



(Monas crepusculum), 



new receptacle for his drop of water, and this was 



noticed by his cousin who remarked 



"Do you, then, keep all these kinds separately? n 

 11 It is easier to study them when they are so. 



Different sorts of infusions or decoctions are more 



B 



VEGETABLE INFUSORIA* ( VoloX fflobator). 



A, THE OBGAXISM; B, DETACHED ZOOSPORES. 



specially resorted to by certain animalcules. For 

 instance, one finds more particularly 



" Yolvox and Yorticellee in infusions of hemp-seed. 



" The species of Enchelys in infusions of hay or 

 grass. 



