mi. OKQAHfl "i run MIM.I.I. QBBM-LAYBB, 400 



onlv incon>pienoii> ivninant of it are lift at its finis (h\datid of 

 the epididymis and >inus pTOttatlOUS or atenifl maseulinu-) : in the 

 female it lifCiMiu > the i ll'fivnt apparat u> of t ho ovary, th- 

 p:ui thf oviduct, t he |' .-terii.r part th- iitfni> ami vagina, tin- 1 

 nMilting from t he fu>ion of tin- dnct> of tip : th'- 



ho.lv aa far a> th-\ an- n.doed in the genital cold. 



31. In the male the anterior portion ot the primitive kidney 

 (meeonepbroe) having united with the .M-minal tuhules hy DQ 

 of the sexual ronl.s persists as the epididymi> ; the remainder de- 

 generates into the paradidymi>. In the female both part- degenerate 

 into epoophoron and paroilphoron, which coi-rtv-pond ; ly to 



the pididymis and paradidymis of the male. 



:\'2. The sexual glands, \\hich are originally estahli-hed in the 

 luml ar region, gradually move with their outlets downward toward 

 the pelvic cavity. (Descensus testiculorum et ovariorum. Oblique 

 course of the spermatic arteries and veins.) 



33. In the migration of the sexual glands a r61e appears to be 

 played hy the inguinal ligament, which passes from the primitive 

 kidney underneath the peritoneum to the inguinal region, peneti 

 through the wall of the abdomen, and ends in the skin of the genital 

 rid-vs that surround the cloaca. (Guhernaculum Hunteri in the 

 male; round ligament and ligamentum ovarii of the female.) 



34. The test-is is received some time before birth into tin- scrotum, 

 an appendage of the body-cavity; the scrotum owes its origin to tin- 

 fact that the peritoneum forms an evagination (processus vagina li> 

 peritonei) through the wall of the abdomen into the genital ri< 

 and that afterwards the evagination is completely cut oft' from the 

 body-cavity by the closure of the inguinal (anal. 



35. The layers of the scrotum or the envelopes of the testes corre- 

 >pond, in accordance with their development, to the separate layers of 

 the body-wall, as is shown in the following comparative summary : 



]-:,,c,l:i>e8 of the Testes. \VU / (/,> Abdo 



Scrotum with tunica da: Skin of the abdomen. 



COOPER'S fascia . 3 i. rti-ial abdominal fa-cia. 



Tunica vnginalis coimnunis with Mu>ele-layer and fa>c:a ti 



cremaster. rent ahdomini.-. 



Tunica vaginalis propria (parietal Peritoneum. 



and visceral lay." 



30. The external s.-xr,al or-an- are develop, d in man and woman 

 from the same kinds of fund iments in the neighborhood of th- cloaca. 



