220 Mr. Home’s anatomical Account , &c. 
c. The cavity of the intestine before the valvular structure 
begins. 
d. The orifice leading into it from the cavity next the sto- 
mach. 
e . The opening of the ducts from the liver. 
f. The valvular portion of the intestine. 
g. A portion of the spleen. 
hh. The ducts passing from the liver. 
Fig. 2. The termination of the valvular portion of the intes- 
tine in a rose-like form ; by means of this structure the aliment 
is prevented from too readily making its escape. 
Plate IX. 
The stomach of the common dog-fish laid open, to shew 
the difference of its internal structure from that of the Squalus 
maximus, and also the difference between it and that of the 
common shark. 
a. The internal membrane of the oesophagus. 
b. The termination of the oesophagus. 
cc. The cardiac portion of the stomach, the superior part 
of which is plicated, and the inferior slightly honey-combed, 
the very reverse of what is met with in the Squalus maximus. 
d. The pyloric portion. 
e. The pylorus, 
f. A small space between the pylorus and the intestine, bear- 
ing a faint resemblance to the cavity in the Squalus maximus, 
but so slight, as only to be detected when the fish is in a 
very recent state. 
g. The beginning of the intestine. 
h. The valvular portion. 
