DISSECTION OF THE PERINEUM IN THE MALE. 



289 



layer in the absence of macroscopic hairs and the presence of numerous 

 preputial glands, which secrete a strong-smelling sebaceous material. 

 This material, together with shed epithelium, generally accumulates in 

 considerable amount within the sheath, as the so-called smegma preputii. 



Fig. 40. 



General View (semi-diagrammatic) of the Generative Organs 

 (Leisering and Muller.) 



the Horse. 



1. Scrotum ; 2. Outer layer of the sheath ; 2'. Inner layer of the same ; 2". Outer layer of the 

 prepuce proper ; 2'". Inner layer of the same ; 3. Left testicle included in the tunica vaginalis ; 

 4. Left internal abdominal ring ; 4'. Vessels and nerves of the left spermatic cord ; 5 and 5'. Left 

 and right vasa deferentia, united by 6, a fold of peritoneum (Douglas's fold) ; 7. Left vesicula 

 seminalis; 8. Divided prostate gland; 9. Left Cowper's gland; 10. Urinary bladder; 11. Pelvic 

 part of the mesially divided urethra ; 11'. Extra pelvic part of the same ; 12. Glans penis ; 13. 

 Left corpus cavernosum ; 13'. Its strong fibrous envelope ; 14. Left suspensory ligament of the 

 penis ; 15. Rectum ; 15'. The anus divided. 



The Prepuce (or inner prepuce) is a short tube, the entrance to 

 which lies a little within the orifice of the sheath. Like the latter, its 

 wall comprises two layers — an external and an internal. The former 

 is continuous posteriorly with the inner layer of the sheath, and similar 



u 



