THIRD PART. 
DISEASES SPECIAL TO EACH TISSUE. 
CHAPTER I, 
SKIN AND CELLULAR TISSUE. 
I. 
TRAUMATIC LESIONS. 
EXCORIATIONS—CORES—STICKFASTS. 
We shall say nothing of Jrwised or ordinary cutaneous wounds. Their 
treatment requires no special attention. 
Excoriations, so frequently observed during the warm season on the 
parts of the body which carry the various pieces of harness, are ordinarily 
made by their direct action upon the skin moist with perspiration; 
the epidermis adheres to the harness, becomes loose, and the Malpighian 
and papillary layers of the skin are exposed. The uncomfortable itching 
following gives rise to repeated rubbing on the part of the animal, and be- 
comes the frequent cause of complications when the lesion exists on the 
withers, the neck or the poll. 
Very simple attention is necessary to obtain cicatrization. The injured 
region should be relieved of the pressure of the harness ; if this is on an 
animal whose work can be stopped, it should be left for a few days in the 
stable ; if it has to be kept at work, the saddle or the collar should be 
chambered or padded on each side of the injuring part of the harness 
to relieve the pressure. That removed, the excoriation becomes covered 
with a yellowish or brownish scab and rapidly cicatrizes. In case the 
lesion is extensive and looks bad, recovery may be accelerated by antisep- 
tic lotions or epithems, or applications of vaseline or glycerine. Cocained 
vaseline can be used if the itching is very great. 
The skin of the regions which are the seat of pressure or repeated rub- 
bings—surfaces on horses which carry the harness, on cattle the yoke, and 
the plantar cushion of a dog’s paws—present sometimes circumscribed epi- 
dermic neoformations more or less elevated, with irregular edges, analogous 
in their pathogeny to the cors of men; they are called cores. Surround- 
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