The physiology and hygiene of the house in which we live . atter of the skin, for it is this germinal matter that perpet-ually renews the loose scales which make up the outer orscarf skin, which protects the sensitive nerves and tissues be-neath. The necessity of such protection is shown wheneverthe scarf skin is removed, either by rubbing or blistering,and the sensitive true skin exposed to the air. This same isseen in a chapped skin, which is one from which the outerlayer of epithelial scales has been removed by cold or irritat-ing fluids, leaving the lower and softer layers to crack andblee
The physiology and hygiene of the house in which we live . atter of the skin, for it is this germinal matter that perpet-ually renews the loose scales which make up the outer orscarf skin, which protects the sensitive nerves and tissues be-neath. The necessity of such protection is shown wheneverthe scarf skin is removed, either by rubbing or blistering,and the sensitive true skin exposed to the air. This same isseen in a chapped skin, which is one from which the outerlayer of epithelial scales has been removed by cold or irritat-ing fluids, leaving the lower and softer layers to crack andbleed. This will be readily understood by a reference to theannexed cut, which represents the different layers of the skinon the tips of the fingers. The ends of the nerves and theblood-vessels of the skin are not well shown in the picture,which is simply designed i show ihe epidermis, r layer 14 Physiology and 1Iy<jiene. of dried scales, basement membrane, and a soft layer of gran-ular and germinal matter beneath, constituting the corium,. Section of the The epidermis, h. Two of the quadrangular papillary clumps com-posed of minute conical papillae, such as are seen in the palm of the handor the sole of the foot. c. Deep layer of the derma, the corium. d. Tac-tile corpuscle. or true skin. Through the skin pass several miles of sweatglands, hereafter to be described; and in it are also imbeddedthe hairs, nails, and sebaceous glands. Hair is designed to form an elastic protection and adorn-ment for the head. Minute hairs are, with few exceptions,also found every-where upon the surface of the body; butthey are, if we are to believe the evolutionists, the uselessheritage left us by our great grandfathers, the apes. Afine head of hair is a gift to be proud of, whether black,red, or gray; for the best art of man has never yet succeededin making a satisfactory substitute, and it never will until itsucceeds in making as exquisite a hair factory as that foundin a hair follicle.
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Keywords: ., bookcentury1800, booksubjecthygiene, booksubjectphysiology, booky
