CHAPTER III. 



EXTERNAL DISORDERS : DISEASES OF THE GLANDS. 



Purulent Tumours. 



Strangles, Glanders, Farcy, Grease, as they 

 owe their origin to the same predisposing cause so 

 evidently, that the appearance of either is good as- 

 surance that no other disorder is then to be appre- 

 hended — neither of the above, nor either of those 

 treated of in the preceding chapter, that it seems 

 proper a few preliminary general observations should 

 occupy attention, before we treat of any in detail. 

 Both series of diseases are in like manner constitu- 

 tional, or residing in the blood ; and the whole class 

 agree together so nearly in cause, symptoms, and 

 effect, that the situation of each on the various parts 

 of the body constitutes the main distinction between 

 them ; as this circumstance does also affect the ap- 

 pearance and consistency of the matter produced, 

 although in a small degree only. 



What we most strenuously maintain is, that the 

 latent cause of all tumour, inflamed glands, and 

 spontaneous discharge of matter by skin or mem- 

 brane, is entirely attributable to the actual state of 

 blood of the individual animal. Whence we infer, 



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