344 BUILDINGS, SANITATION, AND DISEASES 
The coal-tar dips, such as chloro naphtholeum, zenoleum, 
and others of this class, give good results, and are more con- 
venient when a small number of animals are to be treated. 
It is very important that the animals be kept wet with the 
solution until all the scabs are thoroughly soaked through, 
and it is a good plan to scrub with a stiff brush to remove as 
much as possible of the scabs. Two thorough treatments, ten 
days apart, are necessary. 
Pens should be thoroughly cleaned and disinfected. Sows 
should be treated as well as the young pigs, though the disease 
. may not show to any extent on the older pigs. The disease is 
transmitted by contact, and the young pigs almost invariablv 
become infected through coming in contact with a diseased 
mother. 
INTESTINAL WORMS, 
Common Round Worm.—The most common intestinal 
worm affecting swine is the round worm, which is found 
mainly in the small intestine. If a post-mortem examination 
is made some time after death, the worms may be found in 
the stomach, having made their wavy there after the death of 
the animal. The worms vary from six to eleven inches in 
length, and taper somewhat. towards the extremities. In color 
they are usually a yellowish white. The eggs of the female 
pass out with the excrement and become scattered over the 
premises. Eventually, some of them are taken up bv other 
hogs along with their feed. 
They do not seem to cause the hog any inconvenience unless 
they are present in verv large numbers, when they may cause 
digestive troubles, and the writer has known death to result. 
There can be little doubt, however, that a pig affected with 
worms cannot make the best. use of its feed, even though it may 
appear quite thrifty. 
