DISEASES OF THE HOG. 203 
old. These deposits may form in the kidneys and 
pass along the ureters to the bladder and _ out 
through the urethra without causing any great 
inconvenience, but should they stick and block up 
the tubes they would cause very great trouble. 
The symptoms would be irritation and retention 
of urine; small stones may remain for a long time 
in the bladder without causing any very great dis- 
turbance; if such should be suspected the animal 
should be fed for the market. I have met with a 
few cases of prepucial calculi in the castrated hog, 
caused by the urine running over the anterior part 
of the prepuce, leaving a deposit of lithic acid 
‘gravel, causing irritation and swelling of the pre- 
puce (sheath), causing considerable disturbance to 
the animal, such as loss of flesh and some stiffness. 
The swelling of the prepuce and some stiffness 
attracts the attention of the owner and an exam- 
ination of the parts will reveal the nature of the 
trouble. 
Treatment: Cast the hog on its side and remove 
all the deposit with the fingers or a pair of forceps. 
When this is accomplished it will be found that the 
lining of the sheath is redandsore. After it has been 
well washed and dried, mix one ounce glycerine, 
one ounce water and thirty grains of tannic acid; 
a little of this should be applied once a day until 
the soreness and swelling have disappeared. 
After it is cleaned out and dresked the animal will 
be much relieved. 
