144 - PRIVATE PRESCRIPTION 
Make an incision about four inches long through the 
enlargemeut and sufficiently deep to depiete it. Then 
place a sponge on the spavin knot and bandage tightly. 
Remove and replace this every twenty-four hours for sey- 
eral days. 
Tapping the Colon. 
This operation has been sufficiently described under the 
head of flatulent or wind colic. 
Tapping the Chest. 
This operation sometimes becomes recessary when there 
is an effusion in pleurisy. Remove the hair by clipping 
from the spot where you intend operating, which is about 
three inches back of elbow ani about five from bottom of 
chest. Use a sharp scalpel and cut between the ribs 
through skin and flesh and insert a trochar or quill and 
drain off all the water and repeat as often as it collects. 
Castrating. 
The be t age for castrating is from twoto three years, 
this usually admitting of a good development of the neck 
and fore parts The mild days of early spring are best for 
operating on horses. Cast the horse and tie him securely, 
take the scrotum in one hand and draw it over one of the 
testicles so that ‘he dividing line can be seen and avoited; 
make a slit in scrotum about three inches long and parallel 
with the divil ng line, split open inner coverings one by 
one until testicle pops out, (do not wound testicle with 
knife,) separate tunics from “12 small end and scrape the © 
cord into with knife about <.. .:1 and a half from testicle. 
When this is done remove ti): second testicle in the same 
way. Should there be much hemorrhage from castration, 
use a strong solution of alum water in the scrutum. 
