112 



Animal Castration 



essential on account of the fact that if the testicle is in the canal 

 it cannot be withdrawn through the abdominal incision. 



Restraint — Since the operation consists in median line laparot- 

 omy the animal should be suspended from the ground to a post 

 or beam above until the site of incision is about opposite the 

 operator's breast. 



Instruments — 



1. Miles' hook castrating knife. (Fig. 25.) 



2. Emascnlator. (Fig. 80.) 



3. Hagerdorn needle (Fig. 84) carrying 20 inches of braided 

 silk No. 12 for abdominal sutures. 



4. Richter's needle holder (Fig. 34). 



5. Curved scissors (6-inch) (Fig. 35.) 



Fig. 84 — Hagerdorn's Needle No. 



(Actual Size.) 



Position- 



-Hanging. 



Sterilization of Instruments and Cleansing Hands of Operator 

 — Satisfactory recoveries largely depend upon cleanliness and it 

 behooves the operator to take extra precautions in this particular 

 regard. Simply because the animal is a hog is no reason why it 

 should be carelessly operated upon. Boil the instruments for 

 15 to 20 minutes, after which immerse them in clean pans eon- 



Fig. So— Testicle of "Ridgling" Boar. G, Testes; H, Globus Major; I, Globus Minor; 

 J, Body of Epididymus; K, Spermatic Cord. 



