vill, | INTRODUCTION. 
hort intervals. )’ The heart has one auricle and one 
ventricle. Their blood ts cold and red. Their 
2a a 
jaw-bones lie one over the other.. The eggs of 
moft are covered with a fkin. “They have a naked 
fkin-like covering. They. are called a: Or 
Amphibious Animals. 
6 UR tH CL AS Ss 
Have external gills. The heart has one auricle and 
one ventricle. The blood is cold and red. Their 
jaws lie one over the other. Their eges have no 
white. They are without ears, They are covered 
with fcales which lie one over another. They have 
fins for {wimming, and are called Pifces, or Fith. 
PPE tH CEA 8 5 3 
The heart has one auricle and one ventricle. They 
have.a cold fanies inftead of blood. Have antenne, 
or a kind of horns; but no brains, ears, or noftrils. 
They- breathe through vent-holes arranged along 
their fides. “Their jaws are placed crofs-wile. They 
are covered with a kind of bony fkin. ‘They are 
called Lnjectg, or Infeds. . ig 
: Me eon eC r A 8's 
‘The heart has one auricle and one ventricle. They 
have a cold fanies inftead of blood. Their breathing 
holes are obfcure. The jaws are various, in various 
kinds. Their fenfes confift in their tentacula. They 
have no heads, ears, or noftrils, or fcarcely eyes : 
sometimes 

