406 



OPERATIONS ON THE DIGESTIVE APPARATUS. 



Pig. 384a. 

 Hemiotome. 



Pig. 385. 

 Herniotomes of Colin. 



I a ring in the wall, a post, a tree, or 



her immovable object. If the opera- 



I )n is to be performed at night, which 



too often necessarily the case, the 



esence of additional assistants will 



lobably be required, in order to insure 

 I: abundant amount and proper man. 



ement of light, which is indispensable 



so delicate a dissection. 

 In operating, the surgeon kneels be- 

 1 ad the patient and with a curved bis- 



ury begins by making a long incision 



ion the tumor, parallel with the long 



is of the testicle. 

 This incision is similar to that which 



made in castration with covered testi- 

 cles, and must involve only 

 the scrotum, the dartos, 

 and the first layers of the 

 lamellated cellular tissue 

 which unite this last to the 

 tunica erythroidea. The 

 remaining portion of this 

 lamellae is then carefully 

 incised, until the fibrous 

 coat is exposed, and the 

 tumor is entirely enuclea^ 

 ted from its envelope of 

 cellular tissue. This done, 

 the fibres of the tunica 

 erythi-oidea are scraped 

 apart with the point of the 

 straight bistoury, imtU the 

 vaginal sac has been open- 

 ed, which the operator dis- 

 covers by the appearance 

 of a stream of liquid pass- 

 ing through. The canula- 

 ted director is then intro- 

 duced into the opening and 



