OPERATIONS WITH ANTISEPTIC PRECAUTIONS. 95 
larities of the wound’s edge or soft parts as the formation of 
the horn later would be irregular. After a thorough disin- 
fection of the wound with a one per cent. sublimate water it 
is covered with iodoform and a pressure bandage is put on 
which is, during the first 4 or 5 days, saturated at least three 
times daily with a sublimate solution. If no peculiarities 
(fever, increased pain, etc:,) appear in course of time, such a 
bandage can safely stay on for 8 days, and according to the 
depth of the injury from 8 to 20 days. A new growth of horn 
will appear so fast that after putting on a few tarred bands the 
animal can be put to work again. 
NAILPRICK. 
In many cases the injury caused to the hoof by a foreign 
body is such, that deeper lying portions, such as the flexor 
pedis perforans, navicular bone and hoof joints become af- 
fected. In such cases it is not sufficient to tamponize the canal 
and keep it aseptic, as more or less necrosis of the injured parts 
often takes place. These necrosed parts cannot be simply 
shoved out of the punctured canal, but it is necessary to en- 
large the canal and to lay it open up to its base. Before dis- 
cussing the operation itself any further, I would like to annul 
the objection, that it is impracticable to perform an operation ' 
whenever the navicular bone or the coffin joint is injured. 
This is actually not so, for under antiseptic precautions such 
injuries heal without any trouble provided that the operation 
is performed in time, before any important changes or destruc- 
tion of the parts alluded to has taken place. Should a suppura- 
tion of the coffin joint, or extensive necrosis of the os pedis, 
frog cushion or the flexor tendon already be present, then cer- 
tainly an operation would not be advisable, for the certainly 
bad results would be claimed to have been.caused by the oper- 
ation. 
After this explanation, and also what I have previously said 
regarding the treatment of nail prick, I would formulate the in- 
dications for the operation as follows: 
Should the injuring body perforate the flexor pedis perforans 
