2 94 Different Wheel Animals . 
Shape of its Body, though its Head and Tail 
are different: for this Creature’s Tail is fur- 
ni£hed with a Couple of Inttruments a a , that 
lie fheathed therein, unlefs when they are 
made ufe of to fatten it to any Thing, that 
it may the better be enabled to occatton an 
Eddy of Water and bring its Food to it with 
the Stream. During the Time it is fo em¬ 
ployed the Body appears extended (as in the 
Figure) and a Number of Fibrilla ?, protruded 
from two proje&ing Parts h b that eompofe 
the Head, put the Water into a violent Mo¬ 
tion, and excite a Current, by their vigorous 
and quick Vibrations, which fets direddy 
towards the Mouth c . 
This little Creature is entirely mufcular, 
and frequently changes the Form of its Ap¬ 
pearance by contracting its Body and pulling 
in its Head or Tail. The periftaltic Motion 
of its Bowels, which are confiderably opake, 
is feen working upwards and downwards in 
an odd Manner, but no Part can with anv 
Certainty be known to be either Lungs, 
Heart, or Stomach, In many of them how^ 
ever, an oval Body, which I guefs to be an 
Egg, is very diftinguifhable, contained feem- 
ingly in a Uterus , or Veffel, that feparates it 
from the other Bowels. They lived with me 
feveral Days in the Water they were brought 
in, but I could never be fo lucky to fee any 
of thefe Eggs, (if fuch they are) difchargecl 
from the Animal. 
CHAP, 
i 
