126 Proceedings of the Royal Physical Society. 



of two separate structures was lost. A transverse section 

 showed that there was neither bone nor definite septum to 

 indicate bilateral character, although there was a slight 

 indication of an imperfect fibrous septum. Further, the 

 corpus spongiosum became submerged within the general 

 fibrous investment of the two corpora cavernosa, although 

 it retained a small amount of surrounding spongy tissue, 

 as well as a special fibrous coat. 



At the point where the corpora cavernosa began to dwindle 

 in size, the corpus spongiosum approached nearer to the 

 surface of the penis, owing to a diminution in the amount 

 of the investing fibrous coat. Here also it ceased to occupy 

 a ventral groove in relation to the united corpora cavernosa, 

 but the lumen of the urethra did not appear to be enlarged. 

 The spongy character of the tissue surrounding the urethra 

 was visible to a point one and a half inches from the urinary 

 meatus. After the corpora cavernosa had assumed their 

 attenuated and cylindrical outline, the corpus spongiosum 

 was moulded upon the rod so formed, and the lumen of the 

 urethra was therefore crescentic. There was therefore no 

 glans penis in the ordinary sense of the term, since no part of 

 the corpora cavernosa was hooded by the corpus spongiosum. 

 The meatus urinarius externus was situated on the left side 

 of the tip of the penis. This orifice admitted a No. 4 catheter 

 into the urethra, which occupied the left side of the glans 

 penis. Each crus penis was provided with a well-developed 

 erector muscle (ischio-cavernosus) at its pelvic or bulbar end. 

 At its perineal end the corpus spongiosum was likewise 

 provided with a bulb, situated mesially, and ou the ventral 

 aspect of the adjacent crura of the penis. This bulb was 

 clothed by a powerful muscle, the ejaculator urinse (hulbo- 

 cavernosics), which, in the absence of any evidence of a 

 median raphe, could scarcely be described as bilateral. On 

 each side, this muscle was attached to the adjacent surfaces 

 of the corpora cavernosa, while posteriorly (i.e., towards the 

 anus) it was attached in the mesial line to the central point 

 of the perineum. As far as could be observed, no part of 

 this muscle embraced the entire thickness of the penis, and 

 there was no evidence of a triangular perineal membrane 



