Dela a OL, 
Pet Gs oe 
VORTICELLA POLY MORPBHA., 
CENA RIC CHARAGTE RK. 
A Worm, capable of contracting or extending itfelf, naked; with 
rotatory cilia. 
Many-fhaped Vorticella green, opaque. 
It is impoffible to defcribe the various forms thofe little Infeéts can 
affume; and, from the microfcope, it is both doubtful and difficult to 
give a correct figure of it, as the activity of its motions and changes 
frequently mifplace it from the verge of the focus. It is fearcely per- 
czptible to the naked eye, and is generally of a green colour. 
Pa Ge OEE, 
VO Rb Chin A RO TOR TA. 
SPECIFIC CHARACTER, 
Cylindrical Vorticella, with a little foot projecting from the neck ; 
a long tail, furnifhed with four points. 
Of all the fpecies of minute Infects, this Vorticella feems to have 
engaged the attention of the curious moft. Baker has defcribed 
C2 1G 
