. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. tn given, but I, or at least unending the ktory murmura the lower ani- may practice â in the case of |iou of the air, ;tors entering d may be brief- ir, that expired mtainsall that ire. out that of the pi breathed, the k. The expired um that of the is really dimin- tieth to oneflf- <mic anhydride oxygen, if the to the amount re been used to Rather lenthan red air in num OHb
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. tn given, but I, or at least unending the ktory murmura the lower ani- may practice â in the case of |iou of the air, ;tors entering d may be brief- ir, that expired mtainsall that ire. out that of the pi breathed, the k. The expired um that of the is really dimin- tieth to oneflf- <mic anhydride oxygen, if the to the amount re been used to Rather lenthan red air in num OHbonicdloKlde. (HMO «-8B0 IS to be drawn the extent of 4 e to somewhat THE RRSPIBATORY SYSTEM. leas than this amount. A similar relationship may be considered to hold for the domestic animals, ihe quantities varying, of course. From experiment it has been ascertained that the amount of carbonic dioxide is for the average man 800 grammes (406 litres, equivalent to 818*1 grammes carbon) daily, the oxygen actually used for the Skone period being 700 grammes. But the variations in such cases are very great, so that these numbers must not be interpreted too rigidly. Experience proves that, while chemists often work in laboratories in which the per- centage of carbonic anhydride (from chemical decompositions) reaches 6 per cent, an ordinary room in which the amount of this gas reaches 1 per cent is entirely unfit for occupation. This is not because of the amount of the carbon dioxide present^ but of other impurities which seem |o be excreted in proportion to the amount of this gas, so that the latter may be taken as a measure of these poisons. What than an is as yet almost entirely unknown, but tliat they are poisons is beyond doubt Small efltete particles of once living protoplasm are carried out with the breath, but these other substances are got rid of from the Uood by a vital process of secretion (excretion), we must believe; whidi shows that the lungs to some degree play
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1890, bookyear1890
