File:A text-book of human physiology (1906) (14767187311).jpg

Identifier: textbookofhumanp00tige (find matches)
Title: A text-book of human physiology
Year: 1906 (1900s)
Authors: Tigerstedt, Robert, 1853-1923 Murlin, John R. (John Raymond), b. 1874, tr
Subjects: Physiology
Publisher: New York and London, D. Appleton and Co.
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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of carbon dioxide eliminated. Pure oxygen is next admitted to makeup what has been taken out by the subject. To determine exactly how muchoxygen has been thus absorbed it is necessary to know how much was containedin the air at the beginning and how much at the end of the experiment. Sub-tracting the amount present at the end from the total amount supplied—i. e., theamount present at the beginning plus the amount admitted—gives directly theamount absorbed. The respiration chamber in this apparatus is provided also with means ofmeasuring the heat lost from the subjects body by radiation and conduction, sothat the entire apparatus is described as a respiration calorimeter.—Ed.) 2. Tlie Apparatus of PettenTcoffer.—This consists of a respiration chamberwith a capacity of 12.Y cubic meters into which and from which air is pumpedin a continuous stream. The air is analyzed both as it goes in and as it comesout of the chamber, a uniform fractional i)art of the total volume flowing out
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