648 DISEASES OF THE HOESE. 



veterinarian, who a few montlis afterwards treated the horse for a 

 skin eruption from which it recovered. Twelve months afterwards 

 it came into the hands of the writer, hidebound, with a slight cough 

 and a slight eruption of the skin, which was attributed to clipping 

 and the rubbing of the harness, but which had nothing suspicious in 

 its character. The horse was placed on tonics and put to regular 

 light driving. In six wrecks it developed a bronchitis without having 

 been specially exposed, and in two days this trouble was follow ed by 

 a lobular pneumonia and the breaking of an abscess in the right lung. 

 Farcy buds developed on the surface of the body and the animal died. 

 The autopsy showed the existence of a number of old glanderous 

 nodules in the lungs which must have existed previous to purchase, 

 more than a year before. 



Public watering troughs and the feed boxes of boarding stables and 

 the tavern stables of market towns are among the most common 

 recipients for the virus of glanders, which is most dangerous in its 

 fresh state, but cases have been known to be caused by feeding ani- 

 mals in the box or stall in which glandered animals had stood several 

 months before. While the discharge from a case of chronic glanders 

 is much less liable to contain many active bacilli than that from a 

 case of acute glanders, the former, if it infects an animal, will pro- 

 duce the same disease as the latter. It may assume from the outset 

 an acute or chronic form, according to the susceptibility of the ani- 

 mal infected, and this does not depend upon the character of the 

 disease from which the virus was derived. 



The animals of the genus Equus — the horse, the ass, and the mule — 

 are those which are the most susceptible to contract glanders, but in 

 these we find a much greater receptivity in the ass and mule than we 

 do in the horse. In the ass and mule in almost all cases the period 

 of incubation is short and the disease develops in an acute form. We 

 find that the kind of horse infected has an influence on the character 

 of the disease; in full-blooded, fat horses of a sanguinary tempera- 

 ment, the disease usually develops in an acute form, while in the 

 lymphatic, cold-blooded, more common race of horses the disease 

 usually assumes a chronic form. If the disease develops first in the 

 chronic form in a horse in fair condition, starvation and overwork 

 are liable to bring on an acute attack, but when the disease is inocu- 

 lated into a debiliated and impoverished animal it is apt to start 

 in the latent form. Inoculation on the lips or the exterior of the 

 animal is frequently followed by an acute attack, while infection by 

 ingestion of the virus and inoculation by means of the digestive tract 

 is often followed by the trouble in the chronic latent form. 



In the dog the inoculation of glanders may develop a constitu- 

 tional disease with all the symptoms which are found in the horse, 

 but more frequently the virus pullulates only at the point of inocula- 



