Hooper, Robert [Editor]: The Anatomist's Vade-Mecum: Containing The Anatomy, Physiology, Morbid Appearances, &c. Of The Human Body ; The Art of making Anatomical Preparations, &c. To which are added Anatomical, Physiological, Medical, And Surgical Examinations For Students (London, 1811)

body, and afford a situation for the organs of toack, exhala-
tion, and inhalation. (See Physiology of Absorption!)

Physiology of perspiration. Perspiration is a specie*
of secretion by which the blood is freed of a quantity of
aqueous fluid by the exhalaut arteries of the skin.

It is divided into insensible and sensible perspiration: the
former is continually going on, by which means the surface
of the body is kept smooth and moist; it may be detected
by placing any part of the skin near a looking-glass, which
will become soiled. The latter, commonly termed *we«r,
is observed occasionally.

UNGUES.

The nails are horny lamina, situated in the extremities of
the fingers and toes, supposed to be a continuation of the
cuticle.

Use. To defend the nervous papillat from contusion.

PILL

The hairs are thin, elastic, dry filaments, growing out
from the skin.

They arise from bulbs, situated in the cellular mem-
brane under the skin: each bulb has two capsules containing
an oily fluid between them, which is thought to give colour
to the hair.

Colour and situation, various.

IS ames. The hairs are termed capilli cn the head ; super'
tiVut, or eyebrows, above the eyes; cilia, or eyelashes, on
the margin of the eyelids; vibrissce, in the nostrils; piti

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