Animal Castration 



155 



of the operation. Whenever possible it is always advisable to for- 

 tify yourself against the animal lying down. 



Instruments — 1. Colin 's Scalpel (Fig. 128) is decidedly the 

 most satisfactory knife for vaginal spaying. This knife possesses 

 a heavy blade with wide belly guarded by an easily manipulated 

 sliding shield. A knife thus constructed can be safely handled in- 

 side the vaginal canal. 



Pig. 128— f'olin's Scalpel 



2. Williams' Ratchet Spaying Ecraseur (Fig. 129). This in- 

 strument is so constructed that it takes up very little space in the 

 vaginal canal, and is sufficiently long to reach the ovaries of the 



Fig. 129 — Williams' Ratchet Spaying Ecraseur. 



largest mare or cow. The ratchet handle enables operator to manip- 

 ulate the instrument with one hand while the other hand remains 

 in the cavity. If an extra assistant is available for the purpose of 

 handling the instrument on the outside, then Dunn's spaying 

 ecraseur (Fig. 130) is an excellent instrument. 



Fig. 130 — Dunn's Spaying Ecraseur. 



3. Vaginal spaying speculum. There are two satisfactory 

 spaying speculums now on the market. A, Williams' Speculum 

 (Fig. 133); B, Paseley's Speculum (Fig. 134). 



