Glanders. 135 



ft has been found too, that the blood is capable of conveying- 

 the infection, by transfusion from a diseased to a healthy Horse. — 

 So that, thoui^h the lymphatic system, (especially in Farcy) be pri- 

 marily and more immediately affected^ yet, ultimately, the blood 

 itself, becom-es contaminated with the Poison. In the inflammatory 

 Farcy of the limbs, the action of the blood vessels is prodigiously 

 cncreased, at the same time that the larger lymphatics are thickened 

 to such a deg-ree as to give some colour to the popular, though erro- 

 neous, notion^ of the veins^ having become corded. 



And this enlarged diseased condition of the lymphatics, is so prcy- 

 digious, in some chronic cases of the Bud or Button Farcy, 

 that in those instances where the skin becomes enormously 

 thickened, some of the smaller ones of that integument, which, 

 in its healthy state, are so minute as not to be descernable by 

 the eye of the anatomist, may be readily injected with quick-silver; 

 and, sometimes, appear to be nearly half the size of a crow's quill. 

 In a practical point of view, however, it is not very material to en- 

 quire, whether the Farcy and Glanders originate in the arterial or 

 lymphatic system. 



Andas I cannot help considering this question, both problematical 

 in theory and useless in practice, I shall leave it to be determined 

 by future Physiologists. It is enough for us to know, that we have 

 plenty of practical facts to argue upon, without going into any 

 nice and subtle distinctions about the original cause of these diseases. 

 And it is upon this principle, I have ever lamented, that the painful 

 and industrious researches of La Fbsse, and others, who have fol- 

 lowed him in the same line of enquiry, respecting the nature and ^ 

 seat of Glanders; should have been, in a great measure, thrown away 



