Licence: Public Domain Mark
Credit: The haemarumascope / by Octavius A. White. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
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![GEORGE TIEMAUIT & CO. • . | .) • 67 Chatham Street, Cor. New Chambers St., New York. 2 AWARDS at CENTENNIAL EXHIBITION, 1876. 2 First Medals and 1 Honorable Mention at International Exhibition, Santiago, Chili, 1875. 2 Silver Medals and 1 Bronze Medal, at International Exhibition, Paris, 1807. {Extract'd from the A mericaii Journal of the Medical Sciences for July, 1877.] By Octavius A. White, M. D„ of New York. A series of experiments,, recently undertaken by me with the ordinary modern appliances, in oidei to determine, if possible, certain physiological points appertaining to the circulation of the blood, could not fail to impress a desire to have at command some mote lead)' and sensitive instrument by which the various minute and delicate qualities and quantities about this latent current could be detected and analyzed. Peculiarities had been always supposed to exist in this'element of nice grade and character, important to be noticed and estimated, yet destined apparently forever to elude tactual skill and even defy discovery by means of any instrument of precision hitherto devised. The instrument here prefigured was found after many patient trials to aid in refined investigations. Exquisitely sensitive to any impressibn, however delicate, received from either artery or vein, it may be intended to explore ; matters of vast interest and IZnvj^idv ng t0 1116 PhyS1°l0gy °f the drculation> aPPear pealed by it for The Htemarumascope *' consists of a glass tube of fine calibre, free at both extremi ties, and bent symmetrically upon itself. This configuration has been-selected with a v,e, ahndge dimension, „ „ „ same «me to ^ ^ , s , * ' T °r cmral'!’“ '»■ to • sensitive n,„i elastic spring One ex remity is expanded in bell-shape, lo facilitate accurate coaptation over the trunk of a upcticnal vessel ,n exclude more eilectnall, all external air during protesso oh e„, ti^and ,0 aeon, loss of force or volume Hrrougi, impact agai^ upri5n fated, the instrument here offered 1 l^lieve to he especially a lalifiedr ^ faithfilUv^hviwart'a full mrl imreri ' ^ua ° lec^ive and r ' * 1U.amI \tracioiustvpresen union, l>v means of iu mmoin i of: ally pulse.characters.about tp.lie critically examined. ? / *4tWs blood ; pi,,,,,, si ream ; anomie, to show.](https://iiif.wellcomecollection.org/image/b22447647_0003.jp2/full/800%2C/0/default.jpg)
