THE MALE PERINEUM. 213 



gradually withdrawn, and an attempt made to catch it 

 in its long axis if possible. When caught, it is to be 

 slowly and firmly drawn out, without hurry, with a 

 slight to and fro motion in a direction downwards, 



FIG. 36. 



S ction of pelvis to the left of the median line at the pubes, and through the 

 middle line at the sacrum. 1. Section of left pubic bone. 2. Peritoneum on 

 bladder. 3. Left crus penis (cut). 4. Pelvic fascia, formirlg anterior ligaments 

 of bladder. 5. Part of accelerator urinse. 6. Posterior layer of triangular liga- 

 ment, or pelvic fascia forming the capsule of the prostate. 7. Anterior layer of 

 triangular ligament, or deep perineal fascia. Between 6 and 7 are seen the fol- 

 lowing: Membranous urethra, deep muscles of urethra (insertion), and Cowper's 

 gland of the left side. 8. Vas deferens. 9. Bulb of urethra. 10. Rectum. 11. 

 Cut edges of accelerator urinae and transversus perinei. 12. Left ureter. 13. Re- 

 flection of deep layer of superficial fascia round transversus perinei. 14. Left 

 vesicula seminalis. 15. Cut edge of levator ani. 16. Rectum. 17. Prostate. 

 (HEATH.) 



towards the floor, and not horizontally towards the 

 pubic arch. After the operation, a searcher or sound is 

 to be introduced to find out whether the bladder is free. 

 Structures Divided in the Lateral Operation of Lith- 

 otomy. The superficial incision divides the skin and 



