DISEASES OF THE HOUSE. 535 



rubbing of the harness, but which bad nothing* suspicious in its char- 

 acter. The horse was placed on tonics and put to regular light driving. 

 In six weeks it developed a bronchitis without having been specially 

 exposed, and in two days this trouble was followed by a lobular 

 pneumonia and the breaking of an abscess in the right lung. Farcy 

 ^buds developed on the surface of the bod}^ and the animal died. The 

 autops}^ 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 fcjr the virus of glanders, which is most dangerous in its 

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

 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 apt to contain many active bacilli than that from a case of acute 

 glanders, the former, if it infects an animal, will produce the same 

 disease as the latter. It may assume from the outset an acute or 

 chronic form, according to the susceptibility of the animal infected, 

 and this does not depend upon the character of the disease from which 

 the virus was derived. 



The animals of the genus E<2uu>i — 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 temperament, 

 the disease usually develops in an acute form, while in the l^'mphatic, 

 cold-blooded, more common race of horses the disease usuall}^ assumes 

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

 horse in fair condition, starvation and overwork are apt to bring on 

 an acute attack, but when the disease is inoculated into a debilitated 

 and impoverished animal it is apt to start in the latent form. Inocu- 

 lation 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 b}^ the 

 trouble in the chronic latent form. 



In the dog the inoculation of glanders may develop a constitutional 

 disease with all the symptoms which are found in the horse, but more 

 frequently the virus pullulates onl}^ at the point of inoculation, remain- 

 ing for some tune as a local sore, which ma^^ then heal, leaving a per- 

 fectly sound animal; but while the local sore is continuing to ulcerate, 

 and specific virus exists in it, it may be the carrier of contagion to other 

 animals. In man we find a greater receptivit}- to glanders than in the 



