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a. It moisiens, and preserves solit, the aeriat sursaceos ille lungs, and prevenis it from being dried by the inspired air. 3. Sometimes it liberates and depurates the blood, by the true Ois medicatrix, from miasma and other morbid acridities, as the stinking or
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11έ The CHEMICO-PHYSIOLOGICAL Doctrine 4. It is the ticarious excretion of the culaneous perspiration; thus, When the lalter is sup pressed, the pulmonary perspiration is inta
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I. To prevent the doing Whicli is very much tobe Dared) of the aerial surface of the larynx, bronchia and vesiculae pulmonales, by the continuat passing of the a tr. r. To defend the sensibie membrane of these paris frona being irritated by acrid or pulverulent substances, inspired with the atmospheric air 3. To render the Volce agreeabie, for it becomes hoarse, is the larynx and trachea be dry.
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116 Τhe CHEMICO-PHYSIOLOGICAL Doctrine It is SpcRΕΤΕD by the arterious exhalent vesteis siluated in the externat sursace of the lungs, and internal of the pleura. When abundant, it is carried bach by the lymphatic vesseis of thesepariS. The QUANTITY is very smali in an healthystate; more copious in dead bodies, but most copious in hydrothoraX.
THE VAPOUR OF THE PERICARDIUM.
THE vapoiar whicli exhales inlo the cavlty of the pericardium.
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of the FLUID8 of the HUMAN BODY. 11 It is Sgc RETED by the arterious exhalent vesseis Whicli open on the externat sursace of the heari, and internal of the pericardium. The abundantvapour is again returned by the lymphatic velleis
of the paris just mentioned. The QuANT1TY in the living subject is smali, scarcely conspicuous. In the dead body, for thenaost pari, it is greater than in a naturai state; but it is the greatest in hydrocardia. Iis QUAL1TY is similar to the vapour of the
I. It prevenis the concretion of the heart willi the pericardium. r. It diminimes the fimon of the heari against the pericardium. 3. It preserves the paris somi and sexile.
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ii 8 The CHEMICO PHYSIOLOGICAL Doctrine
THE milhy juice contained in the celis of the thymus gland. It appears to be SECRETED by the many smallarteries opening into the celis of this gland, and la be returned, When abundant, by iis lymphaticvesseis. For an excretoo duct haS ne ver been asyet detetned by any anatomist. QUANTITY : Is any part of this gland be cui and pressed, a great quantity of Whilisti juice novis into the incision. The QuΑL1TY of this milky juice is inodorous, insipid, and coagulable by spirit of Vine into
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glandular fabric of the breasts of women.
The SEcRΕTonY ORGAη is constituted by the great conglomerate glands, siluated in the fatos both breasts, above the musculus pectoralis
posng a mammary glanii, there arises a radicleus a lactiferous or galactiferous duet. All these
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iao Τhe CHEMICO-PHYSIOLOGICAL Doctrine Canais gradually converging, are terminaled
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infant, it osten continues many yearS, Unlesse a fressi pregnancy superVene.
pounds, in addition to that whicli their child has sucked. Η 'That the Onisi es of the milh be derived fronachyle carried with the blood of the mammary ar- teries into the glandular fabric of the breasts, is evident from iis more copious secretion a litile termeaA; iis diminimed secretion fronafroni the Deli and Iase of food or medicines in the secreted milh; and lastly, frona iis spontane-oU3 acescence; sor humours perfectly animal be- come put id.
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ia a The CHEMICO-PHYSIOLOGICAL Doctrine The PROPERT 1 Es of animal and human milh. Milla separates spontaneoussy into cream, cbesse, and serum milh; and that s oner in a rearni stuation than in a cold One. In a greater temperature than that of the air itacesces and coagulates, but more easty and quic er by the addition of acidialis or coagκlating planis.
Lime Nater coagulates milk impersedily. It is nos coagulated by causic assali, for it dissolves iis