Marey Etienne J. 3 foundation papers in the history of cardiology and the electrocardiogram, all from the same volume of the Comptes Rendus Hebdomadaires des Seances de l'Acadamie des sciences volume 82, 1876. All offered in their original weekly issues, removed from the larger bound volume. Nice, crisp copies. The 3 issues: $400
These issue include:
(1) "Des Mouvements que produit le couer lorsqu'il est soumis a des excitations artificielles" in Comptes Rendus... vol 82 no. 7 pp 408-411 in the issue of pp 397-428.
=> In this same issue is bound: Dmitri Mendeleeff, "Des ecarts dans les lois relatives aux gaz", same issue, pp 412-415. This is one of the first papers written by Mendeleeff in the area of aerodynamics.
It is fun to note that Marey and Mendeleeff are found on the same page of the index and just happen to appear one after the other in the 1550pp volume!
- "Marey (a superb instrumentalist and experimenter and physician who will in a few years make pioneering breakthroughs in the study of locomotion and become a founder of cinematography) was the first to record the electrical activity of the spontaneously beating (tortoise) heart", a premier breakthrough in the long line of the history of this graphical presentation, leading to Willem Einthoven (1860 – 1927) who invented and published on the first practical electrocardiogram in 1902, and who began transmitting electrocardiograms from hospital to his laboratory in 1905, for which he received the Nobel Prize.
- "Marey uses the electrometer to record the electrical activity of an exposed [frog's] heart."--"A (not so) brief history of electrocardiography"
- "Discovery of the waveform of the cardiac signal is due to Marey in France in 1876. With the assistance of Lippmann, a physicist, Marey was the first to record the electrical activity of the spontaneously beating tortoise heart, for which they devised the capillary electrometer that consisted of a mercury–sulfuric acid interface in a capillary tube. A current traversing this interface altered the charge distribution and, therefore, the contour of the meniscus. Continuous photography of the change in the meniscus provided an analog record of the cardiac voltage."--in Cardiovascular Engineering: An International Journal, Vol. 2, No. 2, June 2002, "The First Electronic Electrocardiograph", by Geddes and Roeder.
(2) "Des variations electriques des muscles et du couer en particulier etudies au moyen de l'electrometre de M Lippman", in Comptes Rendus, 1876, volume 82, pp 975-977. The full weekly issue extracted from a larger bound volume. The Lippmann reference in the title is to the French physicist Gabriel Lippmann who in 1872 invented a capillary electrometer which Marey employed. "It is a thin glass tube with a column of mercury beneath sulphuric acid. The mercury meniscus moves with varying electrical potential and is observed through a microscope."
(3) "Le Couer eprouve, a chaque phase de sea revolution, des changements de temperature qui modifient son excitabilite", Comptes Rendus, vol 82, pp 499-501, with EKG illustration. 28 February 1876, vol 82 no. 9, in the issue of pp 469-528.