DISEASES OF THE HOG. 201 
which it occupies, contrasted with the resonance 
of the surrounding space, will be sufficient to diag- 
nose it. In this affection the pig becomes feverish 
and restless, until at length a portion of the ure- 
thra or bladder gives way and the urine escapes 
into the peritoneum with fatal results. 
Treatment: It is not very easy to find the cause 
in the pig. Our first efforts will be to try to re- 
lieve the bladder of some of its contents by gentle 
pressure and the application of hot water to the 
back part of the abdomen and the perineum. If 
this should fail, then an opening must be made 
into the urethra by cutting through the perineum 
and a human catheter passed and the water drawn 
off. This will give the animal relief. Then find the 
cause, if possible. If from calculi or coagula in 
the urethra, remove them. If from inflammation 
of the neck, give a dose of epsom salts and bathe 
with warm water. When spasms of the neck of the 
bladder are the cause of retention, give injection 
of warm water with a little opium in it, one dram 
of opium to the ounce of water; repeat this every 
two hours; apply’ chloroform or ether to the nos- 
trils until the animal is slightly under the influ- 
ence of it. If the retention should arise from want 
of power in the muscular coat, give stimulants and 
tonics, such as two drops of fluid extract of nux 
vomica and thirty to sixty drops of tincture of iron 
at a dose, in a little syrup, three times a day. 
INCONTINENCE OF URINE. (ENURESIS.) 
In this derangement the animal has lost the 
power of controlling the sphincter of the neck of 
