200 DISEASES OF THE HOG. 
with one or two drams of spirits of nitrous ether, 
diluted with a little water. Thirty drops of turpen- 
tine given in some mucilaginous substance three 
times a day is useful. Arbutin, in ten to twelve 
grains at a dose, three times a day, given in a des- 
sert spoonful of glycerine or cod liver oil,is of great 
service in some cases. The tincture chloride of 
iron in dram doses three times a day in a little 
syrup is especially useful on account of its action 
on the urinary organs. If there is any hemorrhage’ 
give from five to ten drops of the oil of erigerontis 
in syrup three or four times a day. Feed the pig 
on boiled flaxseed, oatmeal and milk. 
VESICAL RETENTION. 
Retention of urine in the bladder is caused by 
some obstruction to the passage or inability of 
the walls of the bladder to contract on its con- 
tents. Obstruction may arise from inflammation 
of the mucous membrane at the entrance of the 
urethra. It may arise from spasms of the neck of 
the bladder. Other causes are tumors, stones, ac- 
cumulations of mucus and stricture of the ure- 
thra. 
Symptoms: The animal is making constant in- 
effectual efforts to pass urine and is in great dis- 
tress. On examination of the back part of the ab- 
domen, just in front of the pubis, a tumor will be 
felt, forming a somewhat round, well-defined tu- 
mor, and it is sometimes visible. In very fat pigs it 
may be difficult to feel in this locality; in such a 
case the dulness upon percussion over the region 
