MALE ORGANS OF GENERATION. 597 



vas deferens, somewhat enlarged and convoluted, lies along the inner 

 border of each vesicula, and is included in its fibrous investment. It 

 communicates with the duct of the vesicula, beneath the isthmus of 

 the prostate, and forms* the ejaculatory duct. The ejaculatory duct 

 is about three quarters of an inch in length, and running forwards, 

 first between the base of the prostate and the istnmus, and then 

 through the tissue of the veru montanum, opens upon the mucous 

 membrane of the urethra, near its fellow of the opposite side, at the 

 anterior extremity of that process. 



MALE ORGANS OF GENERATION. 



The organs of generation in the male are, the penis and the testes, 

 with their appendages. 



The Penis is divided into a body, root, and extremity. The body 

 is surrounded by a thin integument, which is remarkable for the 

 looseness of its areolar connexion with the deeper parts of the organ, 

 and for containing no adipose tissue. The root is broad, and firmly 

 adherent to the rami of the os pubis and ischium by means of two 

 strong processes, the crura, and is connected to the symphysis pubis 

 by a fibrous membrane, the ligamentum suspensorium. The extremity, 

 or glans penis resembles an obtuse cone, somewhat compressed from 

 above downwards, and of a deeper red colour than the surrounding 

 skin. At its apex is a small vertical slit, the meatus urinarius, which 

 is bounded by two more or less protuberant labia ; and, extending 

 backwards from the meatus, is a depressed raphe, to which is at- 

 tached a loose fold of mucous membrane, the fraenum praputii. The 

 base of the glans is marked by a projecting collar, the corona glandis, 



rn which are seen a number of small papillary elevations, formed by 

 aggregation of minute sebaceous glands, the glandulae Tysoni 

 (odoriferse). Behind the corona is a deep fossa, bounded by a circular 

 fold of integument, the prcrputium, which, in the quiescent state of 

 the organ, may be drawn over the glans, but, in its distended state, is 

 obliterated, and serves to facilitate its enlargement. The internal 

 surface of the prepuce is lined by mucous membrane, covered by a 

 thin cuticle ; this membrane, upon reaching the base of the glans, is 

 reflected over the glans penis, and, at the meatus urinarius, becomes 

 continuous with the mucous lining of the urethra. 



The penis is composed of the corpus cavernosum and corpus spon- 

 giosum, and contains in its interior the longest portion of the urethra. 



* It has been customary hitherto, in works on anatomy, to describe the 

 course of excretory ducts as proceeding from the gland, and passing thence to 

 the point at which the secretion is poured out. In the description of the vas 

 deferens, with its connexion with the duct of the vesicula seminalis, I have 

 adopted this plan, that I might not too far depart from established habit. But 

 as it is more correct and consistent with the present state of science to consider 

 the gland as a development of the duct, I have pursued the latter principle in 

 the description of most of the other glandular organs of the body. 



