Petechial Fever in Cattle. 155 



swellings. Franck especially notes the enlarged tongue gorged 

 with blood and yellowish exudate as in gloss-anthrax. The 

 blood extravasation may be further evidenced in the black or 

 blood-streaked faeces, the reddish urine, and a rosy tint of the 

 milk. 



Symptoms. The animal is dull, sluggish, moves stiffly and 

 with difficulty, and shows hyperthermia, (102 to 106 F. ), in- 

 appetence, impaired or suspended rumination, heat of the roots 

 of the ears and horns, and of the dry muzzle ; the spine, and 

 usually certain points beneath the sternum or abdomen at which 

 swellings are about to appear, are tender to the touch. On the 

 affected parts of the skin the temperature is raised, and there 

 may be detected pea-like elevations which become surrounded 

 and enveloped in extensive swellings that pit on pressure. The 

 swellings show a preference for the thinner and looser parts of 

 the skin, and gravitate rapidly toward dependent parts. Thus, 

 the eyelids, roots of the ears, intermaxillary space, throat, muzzle, 

 dewlap, ventral aspect of the body, axilla, mammae, scrotum, 

 groin, thigh, knee and hock are favorite spots, the liquid rapidly 

 gravitating downward through the loose connective tissue to the 

 lowest points. The face becomes infiltrated to unsightly dimen- 

 sions, interrupting prehension and threatening suffocation, the 

 dewlap swells up to a great size, the forearms or thighs become 

 rounded and tense, and a thick pad forms along the ventral aspect 

 of the body. The white skin on such swellings becomes red, 

 they may ooze a yellowish liquid or blood, the surface becomes 

 depilated, scaly and rough, chaps and cracks appear, going on, 

 it may be, to deep fissures, more particularly at the flexures of 

 the joints, on the throat or muzzle, or on other points that are 

 subjected to pressure. Necrosis of great patches of skin is not 

 uncommon, and these sloughing off leave large wounds with un- 

 healthy, indolent surface and little disposed to rapid healing. 



The petechias show early on the muzzle, the nasal and buccal 

 mucosae, and on other mucous membranes. Exudations also 

 appear and a serous, often bloody, discharge escapes from the 

 nose and concretes in colored encrustations around the nostrils. 

 The nose may be obstructed causing the animal to breathe 

 through the open mouth, protruding the tongue which is often 

 also the seat of extensive swelling, discoloration and induration. 



