File:The Röntgen rays in medical work (1899) (14753796861).jpg

Identifier: rntgenraysinmedi00wals (find matches)
Title: The Röntgen rays in medical work
Year: 1899 (1890s)
Authors: Walsh, David
Subjects: X-rays Radiography X-Rays Radiography
Publisher: London : Baillière, Tindall and Cox
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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an be applied successfully. With the bones of the neck, too, nogreat difficulty is anticipated. Since that time further work has been done by Major FrederickSmith, of the Army Veterinary Department, and Professor Hob-day, the results being to effect a great reduction of exposure andto bring the method within more practical limits, also to showthe value of the screen in certain cases. The main difficulties have arisen in connection with thediagnoses of spavin and navicular disease. In spavin the close-ness of the bones to each other, their curved articular surfaces, * This section has been kindly revised by Professor F. Hobday, of the RoyalVeterinary College, London. f Journal of Comparative Pathology and Therapeutics, vol. ix., p. 58 ; Veteri-nary Records, September, 1896. MEDICAL AND SURGICAL APPLICATIONS 241 the presence of overhanging ridges so frequently found in normalhocks, together with the fact that the bones are placed onebehind the other, made the task of unusual difficulty.
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Fig. 98.—Phalanges of Horses Hoof (60 seconds exposure).By A. W. Isenthal. In navicular disease the experimenters have up to the presenthad to acknowledge failure, as the position of the bone in regardto its surroundings and the nature of the lesion render attemptsto further diagnosis by the application of the #-rays abortive. APPENDIX A NEW FORM OF BADIATION Being a Preliminary Communication to the Wurzburg Physico-Medical Society, by Professor Wilhelm Konrad Rontgen, December, 1895. 1. If we pass the discharge from a large Ruhmkorff coil through aHittorf or a sufficiently exhausted Lenard, Crookes, or similar apparatus,and cover the tube with a somewhat closely-fitting mantle of thin blackcardboard, we observe in a completely-darkened room that a paper screenwashed with a barium-platino-cyanide lights up brilliantly and fluorescesequally well whether the treated side or the other be turned towards thedischarge-tube. Fluorescence is still observable 2 metres away fromthe apparatus.

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