The Hijlory of ANIMALS* 
Enchelis capite attenuato, cauda truncata . - 
The Enchelis> with the head finally and the tail truncated* 
This is one of the larger Animalcules: it is confiderably long, in proportion to it’s 
thicknefs, and is very tranfparent: it’s furface is fmooth 3 it’s fkin appears extreamly 
thin, and fcarce at all coloured: it is fmallefb at the head 3 it’s whole body, except 
at this part, is of the fame thicknefs, and the end, where _the tail fhould be, is trun- 
cated. It is but languid in it’s motions. 
It is found in fermented liquors, that have flood till vapid, particularly in cyder. A 
third magnifier fhews it very diftindlly. 
Enchelis corpore utrinque attenuato y annulate . tSJlMgSt 
The Enchelis , with an annulated body , fmall at each end. 
This is a very minute Animalcule. It is very flender, in proportion to it’s lengthy 
and is tranfparent 3 but it’s fkin feems thicker than in either of the former, and of a 
brownifli colour. It’s extremities are both fmall, but the head runs more to a point 
than in the other 3 and the furface of the body, when flri&ly examined, appears not to 
be fmooth as in the others, but annulated or compofed of a number of rings or joints, 
like that of an earthworm 3 and it’s motions are performed, by extending and con- 
trading it’s body in the fame manner. 
It is found, like the former, in fermented liquors, that have flood till they begin to 
decay, but particularly in dead vinegar. The other fpecies are alfo fometimes found in 
that fluid, but more rarely, and never any of them till it becomes quite dead and vapid 3 
hence the abfurdity of the opinion, that vinegar owes it’s fharpnefs to thefe Animal¬ 
cules, is fufficiently evident. 
Thefe are the diftind fpecies of this genus, which I have hitherto obferved. Au¬ 
thors in general feem to underfland the capillary eels as of one fpecies, and even add 
to them the larger animals of this form, found in dead fmall beer, and very much de¬ 
cayed vinegar, under the fame name, though thofe are in reality ‘the offfpring of a 
common fmall black fly, to be deferjbed in it’s place. 
v 
CYCLIDI A, 
A NIMALCULES which have no vifible limbs or tail, and are of a roundifii 
or elliptic figure. Some of thefe have been figured and deferibed by the micros¬ 
copical writers, but in a very vague and indeterminate manner, and without names. " 
Cyclidium corpore oidiculari pellucidifftmo. 
The Cyclidium ., with a round and very pellucid body. 
This is of the number of the fmallefl Animalcules. It is of an exadly and per- 
fedly round fhape, and fo pellucid, that in a full light nothing is diflinguifhable of it 
but a thin line marking it s circumference : in the belt adapted light it appears no other 
than an extreamly thin and fmooth membrane, filled with clear water^ it is colourleis 
as the fluid it fwims in; it’s motions are very quick, and it is a continual prey to the 
larger inhabitants of the fame fluid. “ J 
It is common in ditch water in fummer; fcarce a drop can be any where taken up 
that does not (hew millions of it. It requires a fecond magnifier, or even a firft to fee 
tt diftinftly. 1 
Cyclidium corpore orhicularifubfufco. 
The Cyclidium , with a browniJh i orbicular body. 
This is of the number of the fmaller Animalcules, but it is confiderably larger than 
the former. It is lefs exadly round alfo in it’s lhape, though it never much recedes 
from that figure. It is pellucid, but lefs fo than the former: it’s ikin has fomewhat 
of a brownifli tinge, and is fmooth; but there are feen within the body fome foots 
and lines which mark out where the inteftines lie. It is very nimble in it’s motions, 
and 
