File:Practical radiography - a handbook for physicians, surgeons, and other users of X-rays (1901) (14777663693).jpg

English: Mauser Bullet in Chest. (Radiogram taken at the Imperial Yeomanry Hospital, Dulfontein, South Africa, 1900, by J. Hall-Edwards.) From: PRACTICAL RADIOGRAPHY: A HANDBOOK FOR PHYSICIANS, SURGEONS,AND OTHER USERS OF X-RAYS by A. W. Isenthal and H. Snowden Ward

Identifier: practicalradiogr00isen (find matches)
Title: Practical radiography : a handbook for physicians, surgeons, and other users of X-rays
Year: 1901 (1900s)
Authors: Isenthal, A. W Ward, H. Snowden (Henry Snowden), 1865-1911
Subjects: Radiography X-rays X-rays Radiography X-Rays
Publisher: London : Published for The Photogram, Ltd. by Dawbarn and Ward, Ltd.
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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complementary color. Thus, for the reproductionof red, the dye employed was a suitable green, whichabsorbed all the red rays and forced them to do chemicalwork in the film. The particular dye used, however,entered into a new light—sensitive combination with thecolloid base of the emulsion. For orange and yellowcolors, blue or violet dyes were employed. Thus theproper rendering of colored, objects in monochrome as wellas the foundation of photography in colors became at oncean accomplished fact. Now, what we require for efficient X-ray recording is anemulsion which will absorb the rays—or the equivalentof a dye. Possibly immersion of the plate in some X-ray-opaque solution will solve the problem. Quite early in the history of radiography attemptswere made to embody certain fluorescent substances intothe emulsion in order to increase its sensitiveness to theX-rays, but the results were not at all encouraging, sincethe negatives showed a coarse grain and the gain in sensi- Plate IX.)
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MAVSER BtTLLET IN CHEST. (Radiogram taken at the Imperial Yeomanry Hospital, Dulfontein, South Africa,1900, by J. Hall-Edwards.) Detecting and Utilising X-Rays 129 tivity was not very appreciable. Increasing the thicknessof the film (as tried by Lumiere) gave better results, butsuch plates are more tedious to manipulate, as the variousreagents penetrate the film more slowly. In this categorywe must also include the plates and films with emulsionson each side, introduced by Dr. Max Levy : the photo-graphic manipulation, although fairly speedy, is rather in-convenient. Of other so-called X-ray plates and paperswe will mention the Cathodal plate, by Edwards & Co.,Eastmans X - ray paper, Carbutts films, and latterly,Cadetts X-ray paper. Mr. Wilson Noble, in his presidential address to theRontgen Society in July 1900, threw out an interestingsuggestion which we quote verbatim. What we want isan emulsion—whether of silver-chloride or of another salt Icare not—-that shall be at once

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