A Short Explanation of the an ABLES. 
bréaft bone by the concretion of the perito- 
neum, and the ligament by which the liver 
is fufpended. 
cc Natural openings of the tubes, growing 
againft the membranes already taken notice 
of, which extend over the heart, and its pe- 
ricardium. | 
dd That part of the tube which makes a great 
many beautiful windings and foldings. 
e The blood vefiels of the tubes. 
ff The extremities of the tubes, near or about 
the fides of the uterus. 
gg The uterus, confifting of two parts. 
6 The ftraight gut in its natural fituation. 
é The urinary bladder, confifting of two parts, 
in its natural fituation. 
k The contracted ovary, in which there flill 
remains one perfect egg. 
/ Part of the left kindey, upon which the ovary 
lies, and at whofe fide lies the vein of the 
kidney. Dy 
Appendages of the ovary fupplying it with 
oil. 
mn Two eggs floating freely in the belly, near 
the tubes 
o An egg in the tube itfelf. 
p The ftomach contracted, in its natural fitu- 
ation. 
g One of the tubes of the liver. 
r The gall bladder. 
ss The lungs; the left one contracted. 
t¢ The auricle of the heart. 
uuu Parts of the thorax and abdomen cut 
off. : 
Po 6Gi.¥. 
The manner of finding the eggs difperfed in the 
Frog's belly, when in their pafage through the 
tube into the uturus. 
a Some little eggs in the ovary. 
566 Some eggs, {cattered up and down the 
belly. 
c Six eggs clofe to the tube’s mouth. 
ddd ¥ggs in the tubes. 
e An egg in the tube, near its mouth. 
i f Some eggs, preffing through the extremities 
of the tubes, into the utrus. 
& The manner in which the eggs appear faintly 
through the uterus. — 
4 ‘The manner in which the eges appear di- 
ftinétly through the uterus, after it has been 
for fome time expofed to the open air. 
- The extremity of the double uterus, which 
opens into the ftraight gut, about an inch 
from the place where the tubes empty 
. themfelves into the uterus. 
k The origin or beginning of the great artery, 
with the auricle and heart. 
Z/ Natural openings of the tubes. 
mm ‘Che lungs in their natural fituation, in 
part covering the tubes, 
S 
lvit 
EMG) Vi. 
A microfcopical view of the fore legs oF arms of 
the male Frog. 
a The thick thumb. 
& Black papille, with which it is covered: 
TA Be OXEPVIL 
Ble lan in 
The manner in which the Frogs copulate. 
aa The manner in which the male embraces 
the female, with his arms, and as it were 
folds his fingers between one another. 
66 The manner in which the head of the 
male, lies over the head and between the 
eyes of the female. 
c¢ The drum of the ear, covered only with 
the external fkin. 
d The manner in which the female ejects her 
eges. 
e The manner in which the male pours out its 
feed upon them. 
Jj The manner in which the eges flow together 
in a circular form: 
Py Gk HI, 
A microfcopical view of the cvary and its appen-: 
dages. 
aa Some eggs, b Larger eggs, 
ed Eggs becoming imperceptible by degrees. 
eé Blood veffels interwoven with the eggs. 
J A perfect egg, about to difappear in the 
fame manner 
EF 1G. TV. 
A clufler of eggs magnified. 
aaa YUollow membranes, .or little membraries 
full of cavities, in which the eggs lie: 
6 6 Blood veffels belonging to the faid clufter. 
¢¢ The main trunk of the blood veffels. 
No. 1. f0<10,,. 
The flow increafe or growth of the eggss 
1 A Frog’s egg newly depofited. 
2 Another, a day old. 
3 Another, two days old. 
4 Another, three days old, as expreffed in 
four different drawings. 
5 Another four days old. 
© The foetus of the Frog, as it appeared the 
next day. 
10 The fame viewed on the tenth day from 
the laying of the egg. 
P FIG. V, 
