This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1844 Excerpt: ...within the receiver of a forcing or exhausting air-pump; though, from its magnitude and form, as well as the materials of which it is ...Read MoreThis historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1844 Excerpt: ...within the receiver of a forcing or exhausting air-pump; though, from its magnitude and form, as well as the materials of which it is composed, it may bear little resemblance to the ordinary air-pump receiver. 453. The amount of air supplied to the blood in the lungs must obviously vary at each inspiration, according to the density of the atmosphere inspired. From this cause, then, more air, by more frequent inspirations, may be requisite when the barometer is low, that a proper supply may be obtained. 454. It will also be apparent, on considering the influence of the pressure of the atmosphere, that hcemoptysis may be apprehended to increase on a sudden fall of the barometer, from the diminished resistance which the blood-Tessels present to the pressure of the blood within; and the annals of medicine notice various cases in unison with this opinion. 455. But the influence of a variation in the height of the barometer, is, perhaps, more familiarly known by its effects upon stagnant pools and marshes, and all materials loaded with gaseous products, whether formed by the process of fermentation, putrefaction, or other operations. The effluvia from drains and marshes, and the fire-damp of mines, may be taken as wellknown examples of matters subject to such changes. If these be, in a great measure, pent up, by the pressure of the atmosphere, in those bodies from which they are discharged, the amount evolved being comparatively trifling, a sudden fall of the barometer immediately causes their liberation, which is much more excessive at first than afterwards. But a rise of the barometer is equally accompanied by a diminution in the facility and rapidity with which such products are evolved. 456. The influence of the pressure of the atmosphere is accordingly most ...Read Less
With Remarks on Warming, Exclusive Lighting and the Communication of Sound. 1st Ed. xx + 451pp. + 32pp. publ. adverts. Frontis., 321 figures. Some very occasional marginal spotting, gilt lettered blind embossed cloth, some minor soiling, corners bumped with sl. wear, head of joints split, head of spine bumped and sl. chipped. David Boswell Reid, Physician, Chemist, Engineer (1805-63). DNB ‘...The ventilation of public buildings was a subject which early engaged his attention, and in 1844 he published [the above]. The book attracted general notice, and his system was adopted by Sir Charles Barry in the new houses of parliament. Reid was engaged for five years at Westminster upon this work. His method was also applied more fully to St. George's Hall, Liverpool—the only building, according to his own statement, in which his system was completely carried out...'
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