The hydropathic encyclopedia : a system of hydropathy and hygiene in eight parts ..designed as a guide to families and students, and a text-book for physicians . into innumerable intermediate vessels, forming a capillary plexusin the superficial strata and papillary layer. No lymphatics have beendiscovered in the papilUe, but they are supposed to be interwoven withthe capillary and mucous plexuses in the superficial strata of the derma. Appendages of the Skin.—These are the nails, hair, sebiparou9glands, and perspiratory glands and ducts. The nails are a part of the epiderma, and identical in
The hydropathic encyclopedia : a system of hydropathy and hygiene in eight parts ..designed as a guide to families and students, and a text-book for physicians . into innumerable intermediate vessels, forming a capillary plexusin the superficial strata and papillary layer. No lymphatics have beendiscovered in the papilUe, but they are supposed to be interwoven withthe capillary and mucous plexuses in the superficial strata of the derma. Appendages of the Skin.—These are the nails, hair, sebiparou9glands, and perspiratory glands and ducts. The nails are a part of the epiderma, and identical in structure;they are implanted in a fold of the derma, called matrix, which actsthe part of a follicle ; at the bottom of the groove of the follicle are anumber of filiform papilla?, which produce the margin of the root, and,by the successive formation of new cells, push the nail onward in itsgrowth. The concave surface of the nail is in contact with the derma,and the latter is covered by papilla?, which detain the nail in place, andincrease its thickness by the additiou of newly-formed cells on its undersurface ORGANS OF THE EXTERNAL SENSES 203 Fig. ioa. In Fig. 108 are seen—1. The Its deep layer, the rete mucosum. of the quadrangular papillary clumpscomposed of minute conical papillffl, suchas arc seen in the pa-lm of the hand or soleof the toot. 4. Deep layer of the derma,the corium. 5. Adipose cells. 6. A su-doriparous gland with its spiral duct, asare seen in the palm of the hand and soleot the foot. 7. Another sudoriparousgland with a 6tniighter duct, such as is6ecn in the scalp. 8. Two hairs from thescalp, enclosed in their follicles; theirrelative depth in the skin is A pair of sebiparous glands, openinghy short ducts into the follicle of the hair. The hairs are horny append-ages, produced by the involutionof the epiderma, constituting thefollicle, and subsequent evolutionof the same structure, constitu-ting the shaft of the hair. Hairs
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Keywords: ., bo, bookcentury1800, booksubjecthydrotherapy, booksubjectmedicine
