202 | 
organ is somewhat elaborate for besides containing the typical parts 
it has also some additional ones. The length, measuring to the apex 
of the glans penis is about 14 inches. Fig. 1 is a drawing of the 
Fig. 1. Distal end of ram’s 
penis, as seen from the left side, 
showing glans, accessory glans, fili- 
form appendage and knob-shaped 
protuberance at proximal end of 
appendage. The prepuce is repre- 
sented as having been folded back. 
Slightly reduced. 
distal end of the penis, as seen from the left side. The prepuce, 
which in the normal condition of the organ when not erected com- 
pletely covers it, is represented as having been folded back. In ad- 
dition to the well developed glans, which is shown in the figure, is 
a second enlargement of the corpus spongiosum. This is however much 
smaller than the glans proper, and appears as a rounded knob on the 
left side of the penis about an inch and a half from the apex. The 
urethral canal, which is typically median and on the inferior (i. e. dorsal) 
side of the penis up to within a short distance from this enlargement, 
on approaching the latter, crosses over to the right side Having 
passed the accessory glans and before reaching the glans proper the 
urethra re-crosses to the left side. It is then continued onwards 
within a free filiform extension of the penis as is shown in the figure. 
The external opening is situated nearly but not quite terminally at 
the end of the filiform appendage. The latter is attached to the 
main portion of the penis dorsally (i. e. on the inferior surface) and 
to the left side, about half an inch from the apex of the glans. The 
course of the urethra in the body of the penis and the fact that the 
rounded knob is a lateral expansion of the corpus spongiosum and 
therefore of the nature of an accessory glans are readily made out by 
a study of transverse sections. The whole arrangement suggests that 
the distal end of the penis has undergone some sort of torsion, but 
the exact nature of this torsion is not clear. Situated just below the 
point of attachment of the filiform appendage is another smaller knob. 
This is connected with the glans, of which it may be said to form 
part. The corpora cavernosa throughout almost the entire length of 
the penis are united along the middle line to form a single cavernous 
body. This is shown in Fig. 3 which represents a transverse section 
through the middle of the glans. Like other Ungulates the ram has 
no os penis. 
The filiform portion of the penis has hitherto been described 
