C t3To ) 
diicknefs of what I call Capillary Eeles. I have drawn 
F^. K. fome of them at K, with fome of the Capillary Eelcs 
among them, that you may better judge of their propor- 
tions. 
I prelerved fome of this Dunghill-water by me 7 or 8 
^ days, and found the number ot thefe little Eeles decreafing 
^ every day, till I could hardly find one in it, tho they were 
as plentiful as before in the Water'newly taken up. And 
on the contrary I obferved great numbers in the kept Water, 
^ which are very fcarce in the frefh. Among thcfe is one fort 
* very fingular in its fbape and motions. Its body is Spherical, 
only a litrle pointed like a Pear, and it feems very pliable 
like a Bladder fill'd with Water,in which are a vad number 
of dark particles in confufed agitation. Their moft remark- 
~ able motion is a revolving one, they will turn fometimes 
above an 100 times, fometimes not half fo faft in a minute 
the fame way, and then ftop, and turn the contrary way, 
and all this without moving a Hairs breadth out of their 
place. They wjII alfo go forward, turn and return, and 
fetch a large compafs with many Deviations, and in their 
progreffion they always feven in the (horteft turns) keep 
their pointed end foremoflr, the revolving motion ftill con- 
tinuing. And when the Water dries their Skin breaks, and 
A the enclofed Liquid difFufes. I have given their (hapesat L. 
Thefe are of diffeientmagnitudes. 
%.M: There is another fort, reprefented at M, in great num- 
berSy which are near as long as the biggeft kind formerly 
mentioned. Thefe have brisk motions, and are very aftive, 
and have many feet before very vifible. They Will often 
contraa,"and again lengthen rhemfelves as iheySwim, but 
efpecially when the Water dries, t|ey will (hrink them- 
felves up into a Globular figure, and the feet then frand 
out, which you may fee move very nimbly a confiderabre 
time after. Thefe alfo are of diiFerent fizes ad fhews- 
them at their length, and h h repreferirs them contrafted* 
■ . 1 have alfo given you the figure of aaother odlv'm.id 
. • • ' . ^ ' ■ "■" 
