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A Constant Pressure Respirometer for Medium-Sized Animals

P. Spencer Davies
Oikos
Vol. 17, No. 1 (1966), pp. 108-112
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3564785
Stable URL: http://www.jstor.org/stable/3564785
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A Constant Pressure Respirometer for Medium-Sized Animals
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Abstract

A constant pressure respirometer, in which the manometer is drilled from a solid block of perspex and in which the volumetric measuring device is a standard micrometer head, is described. The apparatus has a wide mouthed respiration chamber and will therefore accomodate larger animals than the conventional constant volume and differential respirometers. With a kerosene manometer the sensitivity of the respirometer corresponds to a volume change of 1.8 cu.mm.

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