Investigation of respiration during exercise. Subject breathes into mask and exhalations are measured in gas meter, then fed to apparatus for analysis. From 'The Science of Life' (London, 1929-1930). Halftone.

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Investigation of respiration during exercise. Subject breathes into mask and exhalations are measured in gas meter, then fed to apparatus for analysis. From 'The Science of Life' (London, 1929-1930). Halftone.

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Keywords: ., analysis., apparatus, archival, archive, breathes, exercise, exercise., exhalations, fed, gas, halftone., historical, history, investigation, life, mask, measured, medicine, meter, physiology, respiration, science, subject