Human physiology (Volume 2) . sed of an envelope and a nucleus. The great use of mucus, wherever met with, is to lubricate thesurface on which it is b. Follicular Secretion of the Skin. This is the sebaceous and micaceous humour, observed in theskin of the cranium, and in that of the pavilion of the ear. It is » Med. Chirurg. Transactions, torn. iii.; also, Thomson, Chemistry of AnimalBodies, p. 507, Edinb. 1843. b Chimie Organique, p. 246, and p. 504, Paris, 1832. e Carpenter, Human Physiology, § 640, Lond. 1842. d Manuel dAnatomie generate, p. 478, Paris, 1843. * Burdachs Physiologi
Human physiology (Volume 2) . sed of an envelope and a nucleus. The great use of mucus, wherever met with, is to lubricate thesurface on which it is b. Follicular Secretion of the Skin. This is the sebaceous and micaceous humour, observed in theskin of the cranium, and in that of the pavilion of the ear. It is » Med. Chirurg. Transactions, torn. iii.; also, Thomson, Chemistry of AnimalBodies, p. 507, Edinb. 1843. b Chimie Organique, p. 246, and p. 504, Paris, 1832. e Carpenter, Human Physiology, § 640, Lond. 1842. d Manuel dAnatomie generate, p. 478, Paris, 1843. * Burdachs Physiologie als Erfahrungswissenschaft, v. 235, Leipz. 1835. 260 SECRETION. also the humour, which occasionally gives the appearance of small worms be-Fig. 190. neath the skin of the face,when it isforced throughthe externalaperture of thefollicle; andwhich, whenexposed to theair, causes theblack spotssometimes ob-servable onthe face. Thecerumen is,likewise, a fol-licular secre-tion, as wellas the whitish,odorous andfatty matterforms.
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