THE DEVELOPMENT OF THE UROGENITAL SYSTEM. 193 
is mixed with the secretions of the vas deferens, of the seminal 
vesicles, of Cowper’s glands, and of the prostate. Chemically 
it is neutral or alkaline in reaction, highly albuminous, and 
contains nuclein, lecithen, cholesterin, fats, and salts. 
The movements of the male cell, owing to the action of the 
tail (cilium), suffice of themselves to convey them to the ovi- 
Fig. 141.—Left broad ligament, Fallopian tube, ovary, and parovarium in the human subject 
(Henle). u, uterus ; 7, isthmus of Fallopian tube; a, ampulla; f, fimbriated end of the 
tube, with the parovarium to its right ; 0, ovary ; 0.1, ovarian ligament. 
ducts; but there is little doubt that during or after sexual con- 
gress there is in the female, even in the human subject, at least 
Fig. 142.—Uterus and ovaries of the sow, semi-diagrammatic (after Dalton). 0, ovary; H, 
Fallopian tube ; h, horn of the uterus ; b, body of the uterus ; v, vagina. 
in many cases, a retrograde peristalsis of the uterus and ovi- 
ducts which would tend to overcome the results of the activity 
