Surgical and obstetrical operations . ^, A. The guber-naculum and the vas-deferens constitute the essential guidesin locating arjd recognizing the testicle. By forming a hollow cone with the fingers about the in-ternal ring, the vas deferens, epididymus and gubernaculumtend to drop out into the processus vaginalis where theymay be grasped with the fingers without the peritoneumhaving been ruptured. The vas deferens and epididymuspresent characteristics which are unmistakable to thetrained touch consisting of a small firm cord (vas deferens) XX. Castration of Cryptorchid Horse. Urino gen
Surgical and obstetrical operations . ^, A. The guber-naculum and the vas-deferens constitute the essential guidesin locating arjd recognizing the testicle. By forming a hollow cone with the fingers about the in-ternal ring, the vas deferens, epididymus and gubernaculumtend to drop out into the processus vaginalis where theymay be grasped with the fingers without the peritoneumhaving been ruptured. The vas deferens and epididymuspresent characteristics which are unmistakable to thetrained touch consisting of a small firm cord (vas deferens) XX. Castration of Cryptorchid Horse. Urino genital apparatus of 24 hr. colt. T, T,testicle ; A, testicular artery ; G, gubernaculumtestis ; V, V, vas deferens ; B, uricary bladder ;UA, umbilical arteries retracted within abdomen;P, processus vaginalis ; UV, umbilical CAS TRA TION OF CR YPTORCHID HORSES. 137 or a small mass of fine threads (tail of epididymus) whichroll freely between the thumb and finger and give a sensa-tion which is unlike that produced by any other tissue inthe body. Grasp the part firmly and tearing through theperitoneum seize the vas deferens and carefully draw it outthrough the external wound. (In teaching cryptorchidcastration to the beginner we make our opening down tothe internal ring and grasp the vas deferens between thethumb and finger without penetrating the peritioneal cavityand then passing a pair of long uterine dressing forcepsalong the hand, fasten them upon the vas deferens. Thestudent then completes the operation, using the forceps asa guide. He thus learns the direction and character of theparts and recognizes the internal ring with the peritoneumstill stretched across it, intact.) In case the vas deferens can not be felt before rupturingthe peritoneum, it may be broken through with the indexfinger and inserti
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