120 ANIMALS KILLED IV, 
others, are the Wheel Animal, the Sloth, the 
Anguille of tiles, and thofe of blighted corn. 
A microfcopic animalcule, inhabiting the fand 
of tiles and fewers, is called by naturalifts the 
wheel animal. The abdomen is large, and fitu- 
ated towards the middle of the body: in the 
opinion of fome, there is an heart. The pofte- 
rior part of the animal is provided with a minute 
trident, and the anterior divides into two trunks, 
bearing two molt fingular wheels at the fummits. 
From thefe it has been named the wheel animal. 
One magnified is reprefented Plate 3. fig. 1. If 
the fand we fpeak of is put in water, and remains 
a certain time infufed, the animalcule exhibits all 
its organs. If the water fails, the action of the 
wheels and heart ceafes; the animal gradually 
lofes motion, and becomes lifelefs : it contraéts, 
grows very minute, and aflumes the refemblance 
of a dry emaciated fkin, fig. 2. B. It is fuffi- 
cient to moiften the fand for its revival: then 
the body foon extends, the wheels and the tri- 
dent appear, the heart is re-animated, motion is 
regenerated in the whole animal; it begins to 
fwim, and exercifes all the functions of life, 
That it has remained long dry in the fand is of no 
importance. Leeuwenhoeck, who firft had the 
good fortune to difcover it, and from whofe 
works I draw the chief part of what I relate, has 
feen wheel animals re-animated after being kept 
1m 
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