THE MOST COMMON DISEASES OF SWTXE 569 



Is this disease called measles frequently found in the 

 hog? Answer. Only occasionally in this country, but 

 it is quite common in some of the European countries. 



Is the full-grown worm found in the intestines of the 

 pig? Answer. Only the cystic form is found in the 

 pig. The adult is only found in man. 



Do pigs have any species of the adult tapeworm? 

 Anszvcr. No, but tliey harljor a great many other in- 

 testinal parasites. 



How can one who is not an expert detect the presence 

 of trichina in the flesh of the pig? Answer. Without 

 the aid of a microscope it is impossible. 



Does ordinary cooking destroy the liability to be- 

 come infested with trichina? Answer. Yes. The 

 danger lies in eating imperfectly cooked meat. In some 

 of the Euroj)ean countries the flesh of the pig is eaten 

 raw, or nearly so. which accounts for the greater prev- 

 alence of the disease there than in this country. 



How long after eating the infested meat before trichi- 

 nosis develops in man? Ansiver. From eight to 12 

 days. 



Do not smoking and salting destroy the worms? An- 

 szver. They may have some influence on those on the 

 r.urface of ordinaril}' cured meat. l)Ut the worms in 

 the middle are found to be alive and active. 



MANGE 



Alange is a parasitic disease, but not difficult to cure, 

 and seldom causes death. It is caused by a parasite 

 which burrows under the scarf skin, producing consider- 

 able irritation, destroying it so that scabs form, and on 



