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

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of the FLUIDS of the HUMAN BODY. i 3 licterogeneous bodies, and even the villous coats of the ii testines, are osten iound coveredover Uith a son cruis. Thus it is credibie, that earthy particles may be deposted in the

alx ine faeces, frona the human fluids.

Thirdly, The intestinat mucus miXed copi- 'ous ly v illi the faeces, to Ullicli the sol inesse sonatural to them, is usualty attributed. The UsΕ of the .cxoneration of the alVine excrement is, to clear the intestines frona uselesis and hurti ut acrid saburra.

cavlty of the abdomen. lThe SEcRETORY ORGAN is constituted by the exhaling oscula, situaled on the internat furface of the peritoneum, and externat os ali the abdomines Viscera. The abundant vapour is absorbed by

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i The CHEMICO-ΡHYSIOLOGICAL Doctrine the orifices of the lymphatic Velleis of the sur faces just mentioned. The QuΑNTITY, in a state of health, is very

The Quality of this vapour is like that in allthe large cavities of the body.

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os ille FLUIDS of the HUMAN BODY. 1 sThe SECRETORY ORGAN of this juice is formed by the oscula of the arteries, Whicli open into thecavlty of the , glands. These supra-renab glanda or capi ales, sit ualed aboVe the kidneys, one oneach side, are os a conglomerate structure, and in the middie, between the anterior and posteriqrsui faces, are furnished Mith a smali cavity, in Whicli sonae fluid is found. Iis CorouR in the faetus is Militisti, in the adult, reddisti or yellow, and 1 melimes brown.

detected ; herice the abundant fluid appears to beabsorbed by their lymphalic Messeis. The. UsE of this juice, as weli as that of the

glandS, is aS yet unknown; but Whais e ver it maybe, this alone can be said, that in the faetus these glands are of greater consequence, than in the adult For in the former they are larger thanthe kidneys, but in the latier much lesse.

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1 6 The CHEMICO-PHYSIOLOGICAL Doctrine

THE URINE. CHE saline liquid, secreted in the kidneyS, and

dropping down frona them, guttatim, through theureters, into the cavlty of the urinary bladder. The SEcRΕΤORY ORGAN is composed of the arterious vesteis os the cortical substance of the kidneys, frona Whicli the urine passes through theuriniserous tubuli and renat papillae, into the renat pelvis I Whence it flows drop by drop, through theureters, into the cavlty of the urinary bladder where, it is delained sonae hours, and at lengili, when abundani, eliminaled through the urethra The urine of an healthy man is Divi DED in generat into, Crude, or that whicli is emitted one or two hoursaster eating ; this is for the most pari aqueous, and of ten vitiated by sonae food S, and, Cocted, whicli is eliminaled sonae hours aster the digestion of the food, as that Whicli is emitted

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of the FLUIDs os the HUMAN BODY. in the morning after se ping. This is generalty in sinalter quantity, thicker, more coloured, and more acrid than at any other time. Os such coeted urine

. Tlὶe QUANTITY depentis on that os the liquid drank, iis diuretic nature, and the temperature of the air

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Urine is neither coagulated by astobol of wine, nor mineres acor: Hence it is an a lueous liquor,

Wheri coi D, it is gradually rendered more turbid, and depositis a sediment, Which. IS agam dissolved, is the urine be made Warm. Evaporaled to the thichnesse of honey, it becomes red, bitter, very acrid, but not aikaline, and is called sapa os urine : Whicli, when evaporated lo dryness, is Called extran jurine.

Urine distilled to the consistence of honey, and sustered to ch stalliae, depostssat digesivus, mici 'cosmic ait, and pi Upborated and miserat assali.

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served in an open vestes, it rena alias pellucid fors me time, and at length there is perceived at thebottoru, a nubecula, or liti te cloud, consolidaled asit were Dom the gluten . d his nubecula encyzases by degrees, occupies ali the urine, and Tendersit opake. The natural smeli is changed into' aputrid cadaυerous one; and the sui face . nowgeneralb Covered ' ith a culicis, composed os very minute chrystals. At tength the urine regalias iis trans paren cy, and the coAur is changed si om a yello to a brown ; the cadaverous smeli passes into an allatine : and a brown, grumous sed ent fatis

to the bottona, silled with white particles, 'deliquescing in the air, and so conglutinated as tos Orna, as 'it Uere, litile sost calculi. Thus sedimenis are distinguilla able in the urine; the one White, and gelatinous, and separated in the beginning ; .he other broWn, and SI UINOUS, deposited by the urine, Rhen putrid. SPONTANEOUS DEGENERATION: Os ali the fluids of the body, the urine si st putrefies. In summer, aster a sevi hours, it becomes turbid, and

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sordidly black; then deposita a coprius sediment, and exhales a fetor, like that of puli id cancers, whicli, at tengili becomes cadaverous. Putridurine esseruesces mitti acidf, and is distilled, gives Osr, besore Water, an urinous volatile spirit. The CONSTITUENT PRINCIPI ES of healthy urine

are,

a. The odorous I rincipis of urine, perceptibie tu the smeli, and whicli, during distillation, passes with the water into the receiver.

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is rendered more acid by the phosphoric acid: and thus by sonae is called the acidum perlatum. Pho Iboraled volatile assali. Is calcined extractor xvine, dissetved in spirit of wine, and siltered, be piat to chia salilae, chrystals are formed;whicli consist os volatile aikali with a simaliquantity of minerat alkali, and phosphoricaci l. Heiace it is of three hinds, and is called microcosmic or fus bie sali os urine. This sal buriat in a Crucibie, Or upora burning coal, dismisses iis volatile aikali, and is changed intoa vitriform mas, deliquescing in the air: whicli, on account of the minerat alkali contained init, is not pure acid of phosphorus.

Calcidous maller, deposited in the forna ofbro nista-red ear thy gluten, frona putrescenturine, at the bottona and si des of the chamber- pol. it consits of gluten, animal earib, and the lirbio a id; as the analysis es uris γ cal-ctilus stae S.

The extractive principis of urine. Frona theliquid residuum os urinous stipa, by chrystalli-

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18 a The CHEMICO-ΡHYSIOLOGICAL Doctrineration, a saline liquid is extracted, attractingthe water from the atmosphere, but otherwisse nothnown. The remaining extra ride'inciplii s lubie in Water, and appears to be gelatinous 7. Sal digestivus, culinaos,l and animal earib maybe elixiviat ed froni the incineraled carbone os distilled urine.

No liquor in the human body, hoWeVer pure, i so variabie in respect to quantiu and qualis , as ihς urine; for it Varies, '