394< Mr. Home’s and Mr. Menzies’ Descriptbn , &c. 
tribe of animals is a kind of chain made up of several ducts, and 
not single, as is more commonly the case in the human body : 
a, The receptaculum chyli. 
b, The duct which passes over to the left side. 
e , A lymphatic vessel from the neck. 
The animal’s having been preserved two years in spirits pre- 
vented the terminations of the ducts in the veins being shown, 
as they were not filled, the state of the parts not allowing the 
injection to pass so far. 
Tab. X. fig. 2. The penis filled with injection, putting on 
the same appearance as when erected in the living animal. 
aaa. The crura and corpora cavernosa penis. 
b, The bone of the penis, seen through the membranes 
which cover it. 
c, The end of the bone in the centre of the glans. 
d, The glans penis, which at its anterior extremity forms 
a cavity with a well defined edge; from the centre of this ca- 
vity projects the bone and the orifice of the urethra. 
e, A large vein going along the back of the penis from the 
glans. In the relaxed state the glans entirely disappears, the 
penis at that part being only the thickness of the bone co- 
vered with skin. The substance of the glans is made up of a 
fine reticular membranous structure, which in the relaxed 
state of the parts is completely emptied of its blood. 
These plates are nearly the natural size of the parts they 
represent. 
