Pneumograph, Marey, 1883

Pneumograph_Marey_1883

Etienne-Jules Marey’s device is a small diaphragm (tambour) responsive to pressure. The apparatus amplified the motion of the tambour. Respiration was then recorded on a kymograph.

From Experimental Pharmacology. A hand book.  Methods for studying the physiological actions of drugs.  By Ludimarr Hermann and Robert Meade Smith.  Copyright 1883.

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