I. 



DISEASES OF THE GLANDS. 139 



confined to the track of the main vessel, or, if scattered over 

 the membrane, generally thickest over the path of the lym- 

 phatic. The sethmoid and turbinated bones are often filled 

 with pus, and sometimes eaten through and carious ; but, in 

 the majority of cases, the ulceration is confined to the ex- 

 ternal membrane, although there may be pus within. In 

 aggravated cases, the disease extends through all the cells of 

 the face and head. 



" The path of the disease down the larynx and windpipe is 

 easily traced, and the ulcers follow one line, that of the ab- 

 sorbents. In aggravated cases, this can generally be traced 

 on to the lu?igs. It produces inflammation of these organs, 

 characterized, in some cases, by congestion; but in other 

 cases, congestion having gone on to hepatization, in which 

 the cellular texture of the lungs is obliterated. Most fre- 

 quently, when the lungs are afl:ected at all, tubercles are 

 found (miliary tubercles), minute granulated spots on the sur- 

 face or in the substance of the lungs, and not accompanied 

 by much inflammation. In a few cases, there are larger tu- 

 bercles, w^hich soften and burst, and terminate in cavities of 

 varying size. 



"In some cases, and showing that glanders is not essentially 

 or necessarily a disease of the lungs, there is no morbid afiec- 

 tion whatever in those organs. 



"The history thus given of the symptoms of glanders will 

 clearly point out its nature. It is an affection of the mem- 

 brane of the nose. Some say that it is the production of 

 tubercles, or minute tumors, in the upper cells of the nose, 

 w^hich may long exist undetected, except b}^ a scarcely per- 

 ceptible running from the nostril, caused by the irritation 

 which they occasion. These tubercles gradually become 

 more numerous ; they cluster together, suppurate and break, 

 and small ulcerations are formed. The ulcers discharge a 

 poisonous matter, which is absorbed and taken up by the 

 neighboring glands, and this, with greater or less rapidity, 

 vitiates the constitution of the animal, and is capable of 

 communicating the disease to others. Some content them- 



