Of Ammalcula in Fluids. 157 
Fig. 291- is another fort of animalcula with an umbe- 
lical tail, differing only from the former in having its 
mouth fixed, and tail without any feparation. 
Fig. 292. reprefents another of the fame fort, altho* 
under a form fomewhat different 3 the top of its head is 
double, and two prominencies appear thereon under 
the form of horns, which were intirely covered in the 
other. © 
That reprefented at fig. 293. is called a water-rat, its 
head well fhaped, and lips adorned with long hairs. 
Another fort at fig. 294. is called a crab’s claw, be- 
caufe of its two crooked beaks, whofe motion as well as 
that of its body is very flow, its body is adorned with 
a great number ,of fhining globules. 
Fig. 295. is called a club, its head large in proportion 
to its body, which ends in a point, the infide of which 
is ftrewed with little grains both tranfparent and opake. 
That fort exhibited by fig. 296. is called a filk-worm’s 
bag, becaufe its body is compofed of feveral rings and 
longitudinal fibres, the Ihape of its head is fo nearly like 
that of the tail, that it can only be diftinguilhed by its 
fwimming. 
The animalcule, fig. 297. is called a fpheroid, its head 
is feen at A, a little below which may be feen its heart 
regularly beating - } and feveral round bodies of different 
fizes, which probably were its eggs. 
There are in this infufion feveral forts of eels, diffe¬ 
rent amongft themfelves, and different alfo from thofe 
found in vinegar. 
Fig. 298. reprefents one of them very thick with refpeft 
to its length, which was ftored with a confiderable num¬ 
ber of exceeding fmall fibres, and others alfo that ran 
fpirally from near its head towards the tail. 
At 
