ORGANS OF LOCOMOTION 237 



assumption of the lying posture the greater part of the time, dyspnea, 

 dysphagia, and rise of temperature. These symptoms, in the order 

 mentioned, continue for four to six weeks, and the affected animal 

 apparently recovers. Diagnosis of trichinosis may be possible clini- 

 cally, but the absolute diagnosis depends upon a microscopic detec- 

 tion of the parasite. 



Treatment. —Medicmal treatment may be of some value in elimin- 

 ating the adults from the intestine, but the disease is rarely diagnosed 

 before death. The muscular form of the disease is not relieved by 



Fig. 50. Section of a meajly hog tongue. (Ostertag.) 



treatment. Prophylactic measures, such as general sanitation and 

 eradication of rats, should be instituted. 



CYSTICERCOSIS ( MEASLES ) 



Cysticercosis is a condition due to the invasion and development 

 of the cystic form of a tapeworm. This condition prevails more or 

 less in the swine of practically all countries. Cysticercosis in the 

 muscular tissue of swine is due to the cystic form of the Tajnia 

 KoMum, the cystic form of this parasite being designated fystii-enqis 

 cellulosse. 



Etiology. — The life cycle of the Ttenia solium is as follows. The 

 ovum of the adult, which resides in the intestinal tract of man, is 

 eliminated in the feces. Swine eat the contaminated feces and the 



