DIGESTIVE APPARATUS. 139 



reveals much. Auscultation more valuable, especially after exer- 

 cise: vesicular murmur exaggerated, rough; rales and vague 

 sounds. Great tubercular enlargement of the mediastinal lymph 

 glands induces chronic bloating. 



Strangles. Coryza contagiosa is an infectious catarrh of the 

 mucous membranes of the upper respiratory passages with sec- 

 ondary, purulent inflammation of their corresponding lymph 

 glands. Begins with fever of intermittent character. Pulse at 

 first little increased but may reach 80. Nasal discharge serous, 

 mucous or purulent, usually bilateral and profuse. In 3 or 4 

 days at latest inflammatory swelling of the submaxillary lymph 

 glands, which in 4 to 8 days later have abscesses formed in them. 

 Pharyngitis frequently concomitant. Dysphagia, abscess forma- 

 tion in the subparotid and retropharyngeal lymph glands. If 

 larynx is involved: cough, loud inspiratory noises. In old horses 

 disease often limited to the pharynx. 



Glanders, malleus is a contagious disease of solid ungulates 

 caused by the Bacillus mallei, characterized by the formation of 

 nodules and abscesses in the respiratory mucous membrane and 

 skin. On the nasal mucous membrane we find gray nodules as 

 large as millet seeds, transparent and surrounded by a red zone. 

 The nodules become yellow, degenerate, form ulcers with raised 

 and jagged borders and lardaceous bottom. Nasal discharge slight, 

 frequently unilateral, varyingly sticky, slimy, purulent, occasionally 

 discolored and bloody. Intermaxillary lymphatic glands en- 

 larged, knotty, firm, adhering to bone or skin. In skin and sub- 

 cutis rather flat, painful, hot nodules varying in size up to that 

 of a hen's egg, these break, discharge discolored pus and become 

 ulcerous. Lymphatics efferent and afferent to these nodules are 

 enlarged to thickness of a finger. See also specific examination 

 for glanders. 



Contagious pleuropneumonia of cattle is a contagious, 

 croupous-interstitial pneumonia. An occult stage is distinguished 

 which is marked by a slight cough, fever and mild dyspnea. In 

 the acute stage there is distinct — 41 C. and the symptoms of an 

 acute pleuropneumonia: great dyspnea, weak, short cough, slight 

 nasal discharge, flat sound on percussion, friction bruits, bronchial 

 sound, rales. Appetite, rumination and secretion of milk sus- 

 pended. 



Malignant catarrhal fever, malignant head catarrh, is a specific 

 disease of the ox, takes a subacute course and affects chiefly the 

 mucous membrane of the respiratory and digestive tracts. The 

 brain is also involved. The disease is ushered in by chill; great 

 nervous depression, muscular trembling, stiffness, sometimes inabil- 

 ity to stand. Conjunctivitis and keratitis. Diphtheritic inflamma- 

 tion of the mucous membrane of the nose, sinuses of the head, 

 trachea and mouth; breathing wheezy and rattling. No appetite; 

 milk secretion suspended. 



Swine plague, septicemia suum, is a contagious inflammation 

 of the chest organs of swine. The clinical phases vary with sever- 



