112 GLANDERS AND FARCY. 



restrictive, and is drawn from a non-recognition of several 

 important facts connected with the mode of the development 

 of the disease in its more insidious forms. 



We have been very apt to overlook the long period of incu- 

 bation in certain developments of the disease, and also too 

 much wedded to the idea that the early features or character- 

 istic lesions of the disease are generally, if not always, to be 

 encountered in the skin or mucous membrane of the nose ; 

 whereas we know very well that in many cases, if not in 

 the majority, the primary lesions are met with in the lungs, 

 the trachea, or the larynx, the lesions of the nasal membrane 

 being secondary or terminal, and in not a fcAv no lesions may 

 be discoverable. 



It is a well-known fact that glanders may be propagated by 

 horses which have not shown any unmistakable symptoms of 

 the malady, and where, judging from what has been observed 

 on examination after death, the lesions were confined to the 

 lungs. 



I have a distinct recollection of the propagation of glanders 

 in a very malignant form by a pony in which no visible 

 symptoms of the disease could be traced. 



This animal had been bought at a distance, and when brought 

 home by the purchaser it was placed in a stable along with a 

 four-year-old well-bred colt, which had been bred and reared 

 on the farm, and where no glanders had ever before been 

 known to exist. 



After being in company with the pony for about three 

 weeks, I found the colt on examination to be exhibiting unmis- 

 takable symptoms of acute glanders. The left side of the 

 nasal septum was possessed by several well-formed character- 

 istic ulcers with eroded margins, and several small tubercles 

 in the neighbourhood of these, with considerable swelling of 

 the submaxillary gland of the same side, which was hard, 

 nodulated, and closely adherent to the bone. The nasal dis- 

 charges were also much tinged with blood, and the breathing 

 was snuffling, indicative of the involvement of the membrane 

 and structures higher up the nasal chambers. 



The pony was examined repeatedly from this time until it 

 was sent off the farm several weeks subsequently, but on no 

 occasion could I detect aught characteristic of glanders, nor 



