TV. ‘AND REVIVED. T21 
in dry fand almoft two continued years. With 
this naturalift, we muft obferve, that the trunks 
and wheels are not always completely difplayed 
when the animal revives, but are fometimes ex- 
hibited as in fig. 2. A. Such are nearly the three 
figures which. Baker, after Leeuwenhoeck, has 
given in his Treatife, The Microfcope made eafy, 
where he contents himfelf with repeating what 
that excellent microfcopift had written. 
Though feveral naturalifts have treated of the 
wheel animal, they feem to me to have done it 
but fuperficially, and chiefly to have proceeded on 
the accounts of Leeuwenhoeck. Thus I thought 
my trouble would not be mifapplied in inveftigat- 
ing this interefting fubject, and illuftrating it 
with additional facts; and I was particularly in- 
duced to it by the relation between it and the 
chief objects of thofe tracts. I have, therefore, 
compofed a brief and methodical hiftory of this 
wonderful infect from the materials which obfer- 
vation and experiment have afforded me ;_ and it 
precedes the hiftory of other animals enjoying _ 
the fame privilege. When on the point of pub- 
lifhing the fruit of my labours, another of Baker’s 
works written in Englifh fell into my hands, 
where much is faid of the wheel animal (1). i 
rapidly peruied it ; and at once perceiving that 
| the 
(1) Employment for the microfeope, London 1764. 
