Legs againft the Glafs, to climb up, that then the 
bleed Veflels were thereby prefled, and fothe circulati- 
on hindered. 
After this Frog had been put up about 24 hours in 
this tube, I faw its excrements in a place, as it were on 
a heap. After it had been there twice 24 hours it had 
f jul d again, then 1 did look upon the excrements with 
a Magnitying-glafs 5 in the firft excrement I faw that 
it had made ufc for its food of an animal whofe body- 
was befet with hair of feveral thicknelTes, which were 
very fliarp pointed, which I did judge to be of fome 
flying animal : When I did look upon the fecond ex- 
crement, I faw no hair in the beginning : thefe excre- 
ments did lye in a clear moifture, that was round a- 
bout them, wherein did fwim or cjpeep fome Eels, or 
about 50 fmall Worms, the forepart of their body and 
alfo the hinder part were very clear. 
I have formerly faid, that I did open the fmall Eels 
•which we did find in Vin^^r^ and did take out of 
them fome young Eels. 
ThefeEels of the excrement of the Frogs, are very 
like the before-named ones, if not altogether the fame, 
only with this difference, that the Eels of the Vinegar, 
as. they come out of their Mother's Womb are fome- 
what thinner and liarder. 
, In the firft excrement I difcoverd only two of thefe 
'Eels. 
The fecond excrement I did lay afunder, then I did 
not only fee fome hair^ but alfo a piece of a foot, part 
*of the eye, a piece of a wing, and many pieces of the 
skin of an animal, which I judged to have been a fmall 
creature, whofe v/ings are covered with a fheath, very 
'^ike thofe we call beetles. 
When I did look the next day, and (aw that the 
moifture wherein the, fmall Eels did fwim, was partiy 
^;vaporatcd, and that the Eels did move but very lit- 
tle, J put a little rain water round about the excre- 
ments 
