282 



SWINE PRACTICE 



chymatous degeneration or cloudy swelling of the essential organs. 

 Hog cholera, at least when rapidly fatal, is essentially a septicemia, 

 and partakes of the nature of an acute malady. No doubt there are in- 

 stances when the virulence of the tiltrable virus has been diminished 

 or the resistance of the infected animals has been increased and the 

 disease would be prolonged and probably not very fatal unless com- 

 plications arose. 



In the cases of very acute and rapidly fatal cholera the only con- 

 stant lesion consists of cloudy swelling of parenchymatous tissues. In 



Fig. 76. Head of hog showing lymph-glands. 1.1'. Parotid lymph-glands; 

 2, postpharyngeal or retrophaiyngeal lymph-glands; 3.3', superior cervical 

 lymph-glands; 8, submaxillary salivary lymph-glands on each side of the 

 salivary glands in the intermaxillary space. (From Aureggio's "Album 

 Guide".) 



addition the following lesions may be found in the cases of the usual 

 type of hog cholera : 



Skin. — The skin may be hyperemic, and there may be subcutaneous 

 hemorrhages. The blood vascular skin lesions are most marked on the 

 srft skin on the under surface of the belly and the inner sides of i\vc 

 thighs and forearms. The hemorrhages may be petechial or they may 

 be ecchymotic. When lesions of the skin occur they are scarlet red in 

 color. 



Lymph-glands. — The lesions of these glands are not confined to any 

 one gland or group of glands, but may occur in the cervical glands 



