36 SyMPTOMATOLOGY. 



a sudden elevation of temperature higher than 39°C., or 

 febrile attacks recur periodically for more than a year. 

 Near the final termination, the animal usually shows a 

 collapse temperature lower than 36°C. 



Visible mucous membrane.— The eye-lids and con- 

 junctiva are, at the outset, of a dirty yellowish red or 

 yellowish brown color, slightly swollen, humid, showing 

 a ramiform injection of the blood vessels. After some 

 time the mucous membrane is gradually discolored and 

 becomes yellowish gray or pale or even whitish in the 

 extreme cases ; the swelling disappears. The tinge of 

 other mucous membrane alters somewhat similar to that 

 of the conjunctiva. 



Petechiae. — During the febrile attacks petechiae ap- 

 pear in the conjunctiva, the mucous membrane of the 

 nose, gingiva and other parts, and the mucosa of the 

 rectum, etc. Usually they range from the size of a pin- 

 head to a millet grain. Often, however, they aggregate 

 themselves to form a haemorrhagic area as large as a 

 finger-ball. 



Oedema. — Oedema usually appears at the belly, 

 prepuce, lower portions of the limbs, face massetor 

 region, lips, head, thorax, etc. Its extension varies pro- 

 portionally with the condition of the malady. As in 

 the case of petechial fever, the facial, laryngeal and 

 tracheal regions are so much swollen, that respiration 

 and deglutition are interfered "wnth. In rare cases oe- 

 dema suddenly vanishes immediately prior to death. 



Superficial lymph-gland.— Especially in acute cases 

 the superficial lymph-glands are more or less swollen. 

 Those of the submaxillary space, perinaeum, knee folds, 

 etc. become prominent. But they neither harden nor 

 suppurate. 



Circulatory system.— During the febrile attacks the 



