STENTOR. 117 



dividing, but the two remaining attached by a 

 stalk ; they also increase by buds issuing from 

 the sides of the parent body. 



The first genus of this wonderful family is 

 called Stentor-, the animalcules are free, in the 

 form of a trumpet, and of considerable size, as 

 they may be seen without a microscope, floating 

 as specks in the water. I have found the black 

 species so numerous in some waters as to give 

 the appearance of a black powder having been 

 spilled on the surface. All the species are active, 

 lively creatures, and extremely amusing to watch. 

 They adhere, when feeding, by the pointed ex- 

 tremity of the body to a leaf or stalk, and stretch 

 themselves into the form of a trumpet, expand- 

 ing at the larger end where the mouth lies, and 



