Licence: In copyright
Credit: A new sphygmomanometer / by G. A. Gibson. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
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![& 'ill \ A NEW SPHYGMOMANOMETER* By G. A. Gibson, M.D., D.Sc., LL.D. Tht numbers in brackets refer to the ‘'List of Authorities given at the end of the paier. r] It is unnecessary to enter fully into the history of the qt sphygmomanometer, Tigerstedt (i), Hill (2), Vaschide and Lahy (3), and Janeway (4) have collected the numerous works on the subject. It will sijfifice to mention the experiment of Hales (5), who measured the arterial pressure in the horse by the height to which the blood rose in a vertical tube connected with the artery, and the observations of Poisseuille (6), and Ludwig (7), who respectively introduced and improved the method of estimating arterial pressure by means of the mercurial manometer, which has since undergone many subsequent improvements. To obviate some of its disadvantages, Chauveau and Marey (8) and Pick (9) introduced elastic or spring manometers, which have passed through many alterations. The arterial pressure has been obtained from the limbs f * Read and illustrated before the Society on iith January 1909.](https://iiif.wellcomecollection.org/image/b21942651_0003.jp2/full/800%2C/0/default.jpg)