Eels in Pajle viviparous* 247 
included in its proper Membrane, which, 
is of fo exquidte a Finenefs as to be fcarce 
difcernable by the greated: Magnifier, while 
it inolofes the Embrio Animal. The larged; 
and mod-forward break immediately through 
this delicate Integument, unfold themfelves, 
and wriggle about in the Water nimbly : 
others get out, uncoil, and move about 
more flowly ; and the lead; mature con¬ 
tinue inttrely without Motion. The U- 
terus , or Veifel that contains all thefe 
oval Bodies, is compofed of many Annuls 
or Ringlets, not unlike the Afpera Arterial 
of Land Animals, and it feems to be con- 
iiderably elaftic ; for as foon as the Opera¬ 
tion is performed, the oval Bodies are thru ft 
out with fome Degree of Violence by the 
fpringing back or Addon of this Bowel. 
An hundred and upwards of the young 
ones have been feen to iffue from one 
fingle Eel, whereby the prodigious Increafe 
of them may be accounted for ; as pro¬ 
bably feveral fuch numerous Generations 
are produced in a fhort Time. Hereby 
we alfo learn that thefe Creatures are not 
only like Eels in Shape, but are likewife 
viviparous as Eels are generally fuppofed 
to be. 
I fcarce know a more entertaining Ex¬ 
periment ; and you’ll very feldom be dif- 
appointed, for they feem iike Earth-worms 
to be all prolific, and unlefs by Accident 
R 4 you 
