Marey's cardiography machine, 19th century illustration

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Illustration of a cardiographic device developed by the French scientist Etienne-Jules Marey (1830-1904) to record successive movements of the heart. The device was a fore-runner of the electrocardiograph (ECG). From New Dictionary of Practical Medicine and Surgery by Dr Jaccoud (1868).

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Size: 3860px × 2727px
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Photo credit: © COLLECTION ABECASIS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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