CASTRATION OF CRYPTORCHIDS. 
303 
zct. The external inguinal ring is its entrance, while further 
i, it ends at the abdominal cavity, to be there closed by the per- 
)neum. 
To resume then, we have: the skin and the dartos ; a layer 
cellular tissue; the external inguinal ring, whose internal or 
epubic commissure may be readily observed, and the inguinal 
terstice, space or tract, whose entrance is indicated by the ex- 
rnal ring. Such are the different parts that form the inguinal 
gion in cryptorchids. 
The inguinal interstice or tract , situated between the small 
lique muscle, which forms its inferior, and the crural aponeu- 
sis, which forms its superior wall, results from the resting of 
ese organs upon each other in the internal three quarters of 
eir transverse diameter. Indeed, the reflex portion of the apon- 
rosis of the great oblique which forms the crural arch is a 
rge band attached by one of its extremities to the external 
igle of the ilium, and by the other to the anterior border of the 
ibis in common with the prepubic tendon. 
The small oblique or ilio-abdominal muscle, composed of a 
;shy and an aponeurotic portion, is flabelliform. Its fleshy 
)res, spreading like the limbs of a fan, radiate from the exter- 
il angle of the ilium, the posteriors extending backward and 
ward, the centrals downward and the anteriors forward. The 
>steriors are inserted upon the external quarter of the crural 
ch. From that point and as far as the prepubic tendon, they 
in in front of the arch, simply lying in contact with it, curve 
ffween them and this aponeurosis, upon a space represented by 
e three internal quarters of the extent of this aponeurosis, a 
ace filled with cellular tissue, constituting the inguinal inter¬ 
ice or tract. 
It is an infundibulum, entirely flattened, assuming an oblique 
rection downward, backward and inward. It offers two faces 
walls, one anterior and one posterior; two angles or commis- 
res; one inferior opening or entrance, and one superior or bot- 
m, closed by the peritoneum. 
The posterior wall, also slightly external, formed by the cru 
1 arch, is strong and resisting. The anterior wall, also slightly 
