CHAPTER II. 



THE SKIN AND ITS APPENDAGES. 



Skin Its component parts. Cuticle or epidermis, true skin or corium. 

 Structure of epidermis. Structure of true skin. Difference in animals. 

 Blood-vessels and nerves of skin. Glands of skin, sebaceous or oil 

 glands; sudoriparous or sweat glands. Functions of skin. Secretion; 

 insensible and sensible perspiration. Sebaceous secretion. Smearing- 

 stuffs. Absorption. Penetration of unctuous remedies. The endermic 

 method of using medicines. Eesistanceby the skin to the introduction of 

 materials in watery solutions. Poisoning sheep with dipping-mixtures. 

 Hair and wool. Hair- follicles. Varieties of wool. Classification of the 

 breeds of sheep according to the character of the wool. Long-woolled, 

 intermediate, and short- woolled. The value of keeping the skins of 

 animals clean. Sheep baths. Sheep-shearing. The practice of clipping 

 and trimming horses. Cold, tepid, and warm baths. The hot-air bath. 

 Its application to training purposes. Its uses in medicine. Clothing 

 for animals. Diseases of the skin and hairs. Confusion on the subject 

 in English works. Classification of skin diseases. General remarks on 

 their nature and treatment. Diseases arising from general causes. 

 Erythema. Excoriations. Saddle galls. Cracked heels. Erysipelas. 

 Urticaria. Lichenous eruption . Prurigo. 



THE surface of an animal's body is covered by a skin which 

 acts as a most effectual protecting structure, preventing the 

 penetration of noxious materials, and, at the same time, allow- 

 ing of the escape of effete matters in the secretions con- 

 stantly exhaling from it. As a protecting covering, we find 

 the skin on its surface covered with a layer of horny scales, 

 the presence of which, however, does not interfere with the 

 important functions of elimination of waste matters from the 

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