Skin diseases : an inquiry into their parasitic origin, and connection with eye affections also the fungoid or germ theory of cholera / by Jabez Hogg.

  • Jabez Hogg
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: Skin diseases : an inquiry into their parasitic origin, and connection with eye affections also the fungoid or germ theory of cholera / by Jabez Hogg. Source: Wellcome Collection.

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    tlie smallest increase of oxidation, set up by direct extra- vascular or indirect intra-vascular motion through the nerves, is followed by altered heat, motion, and nutri- tion. The effect of slow but continued per-oxidation may be constantly watched in the skin of the eye. The slightest long-continued mechanical pressure pro- duces not only thickened cuticle, but altered nutrition of the skm itself. In the cornea, a chronic inflammation from some very slight mechanical cause will leave a thickening which may be perceptible for years.— (B. Jones.) _ Unless a due amount of animal heat were main- tained, it would be impossible to carry on the several functions of life, most of which are either impaired or altogether arrested by a very low temperature. Man is so constituted as to be able to resist the effects of considerable changes of temperature; nevertheless, nature has left him the least protected, physically considered, of any animal; his skin, being without external cover- ing, demands on this account more care and attention. From this circumstance alone, the cutaneous surface is subject to frequent derangements. The sensible and insensible perspiration, breathing in fact, which is car- ried on through the skin, is of the highest importance to health, nay, even to life. If we cover the whole of the skin with an impermeable varnish, or enclose the greater part of the body in an air-tight case, the individual so treated dies in a few hours. The escape of the heat of the body through the skin takes place quite indepen- dently of the exhalation of the gaseous vapour; although this, together with the fluid perspiration, is, under ordi- nary circumstances, quite sufficient to regulate the tem- perature of the body. The use of artificial clothing, in regulating the temperature, acts by moderating and restraining the escape of caloric from the body; the warmer descriptions of clothing preventing the escape
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