The hygrology, or chemico-physiological doctrine of the fluids of the human body

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a. The time of the aear. In Winter, the perspirationis much less than the excretion Os urine. 3. Age. Tolita persons eXcrete more pevspirablematter than old people, Who discliarge more urine, and lesis pei spirabie matter. . Food Or Drin . Thias the excretion os urine is encreased by diuretic wines, as Austrian and

Rhenim; and that frona lue Rin by diaphoreticWines, aS the generous Hungarian, &c. Thias also the perspiration is diministred frona too litile or tenaceous f OdS. S. Egimen. Exercise promotes perspiration, res, the renat secretion. Terror suppresses transpiration, jb encreasses it. In warm climates

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aψι The CHEMICO-PHYSIOLOGICAL Doctrinti QUALI TY. The Vapour exhaling froni ille Ihin, and received in a Vesset, resembles an aeri- forna, permanently elastic, fluid; precipitatinglime from lime-water, and is Unfit for the nou-ristament of flame, or the respiration of animais. The CONSΤ1ΥUENT PRINCIPLES appear to be, 1. Mater, attenuated inlo Vapour, by the mal ter of heat.

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. The perspirabie matter liberates the blood, frona supe fluous animal gas, aZOle, and

water.

I. It eliminates the noxious and heterogeneous excrements of the third coection ; heiace theacid, rancid, leguminous or putrid pe piration os sonae naen.

a. It moisiens the externat sui face of the body,lest the epidermis, cutis, and itS nervovS Pa-

pillae be di ted up by the atmospheric air.

. It counle balances the suppressed pulmonarytranspiration of the lungs; sor when it is sup- prelled, the culaneous is encreased: heiacellie nature os bolli appears to be the same.

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246 The CHEMICO PHYSIOLOGICAL Doctrine S WEAT. THE very copiolas excretion of the perspirableaqueous matter, through the so as to be visi

ble in the form os very litile drops adhering to

COLOUR: For the most part yello isti, froni the passage of the subculaneous oti, and sebace-ous matter of the subcutaneous glandS. Some times it is reddim, frona the globules of the cruor passing through, especially under the axillae.

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I. T be citaneoas perspirabis matter, a. Glandula megma aladsubcutaneous Oil: hencelinen is stained with a yello illi colour, and leannes S is brought on. 3. The serum of the bisori This astbrds an immensequantity of water, and the albuminous and saline part of the sweat. It mahes the linenos a viscid rigidity, and of a sali taste. Glass-blowers 1 metimes excrete so acrid a s eat, that sali has been seen collected in crystals on

I. The temperature of the inmosphere. Thus menbaVe a more copiolis, viscid, and higher co-

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a 8 The CHEMICO PHYSIOLOGICA L Doctrine Ioured siueat, on summer days, and in warmcountries, than in coider regions.

frona drink, causes a more acria and coloured

sweat; and the drinking a great quantityos cold water in summer, a limpid and thius weat.

5. Medicines. The s weat of those who have taken mussi, even moderately, and assescelida, orsulphur, sine is of their respectiVe natureS.

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. Di ea es. In this respeet, it varies Very much, in regarii to quantity, smeli, and colour; forthe sweat of gouty persons is suid to turn Vegetable juices to a red colour, and is os a

lucid s eat, others a s eat tinging their linen

In a Very healthy man, the sineat is scarcely observabie, unlesis frona an error of the si X non- naturais. lis si si essest on the body is alwaysprejudiciat, by exhausting and drying it: althoughit is so in elimes of ad vantage. l. By thpplying a quale I excretion; thuS When theurine is deficient, the sweat is osten more

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haea is freqtiently cured by sis eating. a. By climinaling at the fame time, any morbid

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The fluids of the body are si st dissipated in the

air; then the s in paris; arid, at tenglli, after ages, the substance of the bones thenaseives, Volatiliged by putrefaction, totalty evaporate. Forcostins have been fiund, which had been deposit ted sor centuries, and weli closed, in Whicli not theleait appearance of a body could be detected.

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as a The CHEMICO-PHYSIOLOGICAL Doctrine The dead hody, therei ore, does not resolve iis etfinio earth, to be mixed Uith the dust, but into ait from Whicli it was made. For the sol l of burying- places, 'in Whicli, sor ageS, an immense numberos bodies have putresed, is not at nil elevated ;and, were it ollier isse, the whole surface of theearth, Would, by this time, frona the accumulate dbodies of dead meri and animais, have be come amasis of animal earth bicli is no where soli1ad tobe the Case. Nor are dead bodies, when deposted in thecarili, the food of ornis. For these are onlyfound in bodies 'eXposed to the atmosphere, or at

Ieast superficiatly buried, and not in those to which

J. Empli semalous f elling, wherace arises ille dis position in drowned bodies to swim, after a

time, on the furi lce. This intumescence, ors elling, arises frona the conversion of the

putrebing fluitis in to the gaseous state.