Baldness and greyness : their etiology, pathology & treatment / by Tom Robinson.

  • Robinson, Tom
Date:
[1883]
Catalogue details

Licence: Public Domain Mark

Credit: Baldness and greyness : their etiology, pathology & treatment / by Tom Robinson. Source: Wellcome Collection.

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

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    beauty. Nature, however, has provided the hair of the eyelashes with another view—as a protection of the sight against the approaches of insects and other objects. The nails are like the hairs, growths of the cuticle, with this difference, that the upper- most or horny layer which forms the actual nail is more developed. The posterior part, which is hidden in the groove of the skin, is the root, the uncovered part is the body terminating in front by the free edge. That portion of the nail near the root which is whiter than the rest, is from its crescent shape called the lunula. That portion of the skin to which the nail is attached, and by which in fact it is generated, is called the matrix. The growth of the nail is almost like that of the hair, effected by a constant generation of cells at the root and under surface. In con- sequence of the addition of new cells at the posterior part, the nail is made to advance, and by the opposition of similar cells on its under surface the nail grows in thickness. The nails, like the hair, grow more in summer than in winter time, and they also appear to differ in growth in each finger.
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