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Article
November 28, 1885

THE PHYSIOLOGICAL ACTION OF THE DIFFERENTIAL PNEUMATIC PROCESS ON THE CIRCULATION.

Author Affiliations

OF NEW YORK.

JAMA. 1885;V(22):591-597. doi:10.1001/jama.1885.02391210003002
Abstract

A series of physiological investigations, the major part of which has been made only of late years, can so easily be brought into relation with the manner in which Dr. Williams' process reacts on the body that one might easily think that the invention of this apparatus was a consequence of these investigations. But on the contrary, the current of thought was a completely independent and original one. For this very reason it is the more useful and necessary to show that in the pages of theoretical medicine this apparatus, which for a considerable time has stood a number of practical and clinical tests with brilliant results, can be freely proved and its action physiologically deduced. To accomplish this, we have to refer to the researches of a series of authors, among whom we shall mention Einbrodt, Quinke, Pfeiffer, Zuntz, Knoll, and Yager.

A number of necessary experiments have also

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