110 VETERINARY OBSTETRICS. 
missures of the vulva (fig. 49). Both ends are then 
passed between the hind-limbs, one forward and 
upward on each side, to become attached to the rope 
passing along the spine, just behind the withers. 
Another appliance is known as Lund’s truss. 
It sometimes happens that the uterus has been so 
long exposed, that it is not advisable to return it, and 
if saving the life of the patient must be attempted, 
it will be necessary to remove the uterus by a surgical 
operation, which is known technically as ‘‘ Metrotomy.” 
Metrotomy. 
This is always a Serious operation, and the number 
of cases which terminate fatally is very considerable. 
It has been estimated at 95 per cent. It should only 
be attempted after the owner has been made aware of 
the danger. 
Having decided to operate, puncture the uterine 
mass, and ascertain that no part of the intestine has 
been enclosed in the inverted uterus. This done, pass 
a ligature round the uterus, close up to the lips of the 
vulva, thén pass a double ligature through the mass, 
and tie those ligatures so as to divide the tumor into 
four portions, tying the circular and transverse liga- 
tures together. When the ligatures have been made 
fast, cut the mass with a scalpel; cleanse the stump 
with an antiseptic solution or dressing, and return it to 
the cavity. 
The local treatment consists in keeping the parts 
healthy with antiseptics. The general treatment 
