[A healthy skin : a lecture] / by W.J. Sinclair.

  • Sinclair, W. J.
Date:
[between 1800 and 1899?]
Catalogue details

Licence: Public Domain Mark

Credit: [A healthy skin : a lecture] / by W.J. Sinclair. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    A HEALTHY SKIN. * A LECTURE, By W. J. SINCLAIR, ESQ., M.A., M.D. ■ I.—THE STRUCTURE AND FUNCTIONS OF THE SKIN. The skin is not a mere iiitegument or covering for the protection of the parts that He underneath it. It is the organ of sensibihty and touch, just as the eye is the organ of the sense of sight • it excretes or throws out waste materials from the body, and it absorbs, to some extent, substances which come in contact with It. It also does important work in regulating the warmth of the body. In order to do all this work the skin is composed of a variety Pf parts or organs. The structure of these, and their relations to one another, will now be shortly explained with the aid of the diagram, which is taken from a well-known German work on diseases of the skin. Theyare (i) the epidermis or horny layer; (2) the corium or trueskmj (3) the loose tissue, usually containing fat, which lies s^eTan^-fT ^^^^'^ the Vessels; (6) the sweat and oil glands; (7) the hair and nails, usually called the appendages of the skm. ^ sur?re1f'l7rV'^^^'^f' ^''y -^^-y^^—When a part of the surface of the body, the palm of the hand, is blistered, two ayers of the skin are separated by a quantity of watery fluid. The ayer which is raised up is the scarf-skin. l( is not at all sensit ve and may be cu , just like the hair and nails, without pain. I 7s azo tI '^f ^'^'^ ^^^ ^^^^'^ ^^-ying the edge of h razor. The epidermis grows on the surface of die true skin and IS moulded over all its inequalities. Nearer the tn^ sk ' i?t softer and more moist, whilst that part of it which is nearer the external surface is harder and drier. ijy^}^^^^ roundish moist cells nearest to the true skin con tains the colouring matter, upon which depends the varying