2 
Eels in Pajie, 
the Surface in a right Condition, which will 
eafily be done when it is well {locked with 
thefe Animalcules; the continual Motion of 
them preventing any Mouldinefs thereon. 
A Water- Glafs, or fome other Glafs Vef- 
fel, is the mod convenient to keep your 
Pafle in; for, by holding it up againft the 
Light, you will oftentimes perceive the Eels 
wriggling themfelves above the Surface of 
the Fade upon the Sides of the Glafs, and 
may be able to take feveral of them with a 
Pen or Hair Pencil, much more difengaged 
from the Fade, and confequently fitter for 
View, than if you are obliged to examine 
the Pade itfelf in order to find them in it. 
Apply them to your Microfcope upon a 
fingle Talc or Ifinglafs, after having fird put 
on it a very fmall Spot of Water for them to 
fwim about in. The thicker your Pade is, 
and the more they are enveloped in it, the 
greater Proportion of Water will be requifite 
to dilute it, that they may difen tangle them¬ 
felves, and be rendered didindtly vifible. 
They are very entertaining Objects exa¬ 
mined by any K ind of Microfcope, but par¬ 
ticularly the Solar one, by which I have 
magnified them fometimes to an Inch and 
half, or two Inches in Diameter, with a 
Length proportionable, and have found them 
anfwer exactly the Appearance of fuch fized 
Eels. The internal Motion of their Bowels 
may very plainly be didinguifhed; and when 
* the 
