128 Proceedings of the Royal Physical Society. 



terminations of the vasa deferentia. The two dorsal openings 

 were somewhat crescentic in outline. Each led into a short 

 common channel which passed through the prostate gland 

 and then became continuous with the uterus masculinus 

 already described. There was no evidence to show that the 

 uterus masculinus possessed a double lumen. Immediately 

 beyond the verumontanum the urethra became clear of the 

 prostate and dilated to form a bulb, which occupied the bulb 

 of the corpus spongiosum penis. 



(Jb) The spongy loortion of the urethra followed the course 

 of the corpus spongiosum, and when cut across it presented 

 a small circular lumen, except where it dilated to form 

 the bulb. 



The roots of the penis, and the entire organ to a point 

 a short distance in front of the penile circle, were invested 

 in a powerful jacket of fascia, which was continuous laterally 

 with the fascia, passing subjacent to the mus. obliq. abd. 

 internus. The remainder of the penis occupied the ventral 

 groove already referred to, as superficial to the aponeuroses 

 of the abdominal wall, but intimately associated with the 

 panniculus carnosus muscle and the prepuce. 



The Perineum might be described as a diamond-shaped 

 region demarcated by very precise boundaries. Thus, pos- 

 teriorly on each side of the rectum and anus, there were the 

 small muscle masses passing backwards from the hinder 

 ends of the pelvic bones. Anteriorly, the region was bounded 

 by the free hinder edges of the internal oblique muscles of 

 the abdominal wall, converging as they approached the linea 

 alba in front of the penile circle. Through the hinder half, 

 or rectal portion of this lozenge, the anus appeared, while in 

 relation to the anterior half the urethra was situated mesially, 

 with the crura penis and pelvic bones placed laterally. The 

 powerful interpubic membrane, and the strong fascia ex- 

 tending forwards from it, constituted a partition between the 

 penis on the one side and the interior of the pelvis and 

 adjacent part of the cavity of the abdomen on the other. 

 The perineal lozenge measured 20 cm. antero-posteriorly 

 and 9 cm. at its widest part. 



These details show that notwithstanding the extreme 



