older nodules are hard and shot-like to the touch; some of them 

 are gritty — calcification. The number of nodules in a lung- 

 varies from one or two to hundreds. The donkey suffers from 

 an acute form of Glanders, in which the lungs are inflamed 

 over a large surface. The tissue is solid, and on section the 

 surface of the lung has a greyish red colour. 



EPIZOOTIC LYMPHANGITIS. 



Definition.- — A contagious and eruptive disease caused by the 

 Cryptococcus Farciminosus. 



Animals affected. — Horses and mules. The ox is susceptible, 

 but seldom takes the disease under natural conditions. 



Sym2:)tonis. — The eruption appears on the legs, the neck, the 

 head, or any part of the body. Usually it starts near a wound 

 through which the microbe has entered the tissues, but the 

 ulcers often do :not appear for months after the wound has 

 healed. The lymph vessels in the skin stand out prominently, 

 and small hard nodules about the size of a hazel-nut appear on 

 their course. These nodules suppurate and discharge a thick 

 yellowish pus. Proud flesh grows from the wounds, the 

 lymph vessels around become inflamed, and the eruption gradu- 

 ally extends. A thick yellow scab may form over a patch of 

 ulcers. The neighbouring glands are swollen and hard. The 

 ulcers heal with difiiculty, even under treatment, and they 

 may break out again after an apparent cure has been effected. 



The ulcers may appear inside the nostrils, but this is not 

 so common as in the case of Glanders. In Epizootic Lymph- 

 angitis the glands under the jaw may also be enlarged, as in the 

 former disease, and a discharge may appear at one or both 

 nostrils. If taken in the early stages this disease is curable, 

 but after an advanced stage is reached, treatment is hopeless. 

 In the latter case the animals emaciate, and may die of ex- 

 haustion. 



This disease is distinguished from Farcy (Glanders) by the 

 presence of the Cryptococcus in the pus, and failure of the 

 mallein test to produce a reaction. Both Glanders and Epizootic 

 Lymphangitis may be present in the same animal. 



Post-morfeiii. — On post-mortem examination one usually sees 

 little beyond what is seen during life, but occasionally abscesses 

 are found in the internal organ-i. 



