. A system of instruction in X-ray methods and medical uses of light, hot-air, vibration and high-frequency currents : a pictorial system of teaching by clinical instruction plates with explanatory text : a series of photographic clinics in standard uses of scientific therapeutic apparatus for surgical and medical practitioners : prepared especially for the post-graduate home study of surgeons, general physicians, dentists, dermatologists and specialists in the treatment of chronic diseases, and sanitarium practice . of the tube-holder: the patients hands were on the plate,and the wires from a
. A system of instruction in X-ray methods and medical uses of light, hot-air, vibration and high-frequency currents : a pictorial system of teaching by clinical instruction plates with explanatory text : a series of photographic clinics in standard uses of scientific therapeutic apparatus for surgical and medical practitioners : prepared especially for the post-graduate home study of surgeons, general physicians, dentists, dermatologists and specialists in the treatment of chronic diseases, and sanitarium practice . of the tube-holder: the patients hands were on the plate,and the wires from a ten-inch coil were sujiported by a high stand with their free ends restingon the table within an inch or two of the plate. The current was accidentally turned on fora few seconds while preparing for the exposure. The negative wire was at the ladys righthand. She felt a shock, bixt there was neither spark nor disruptive discharge seen. No traceof the current could be detected afterward on the plate-envelope. The print shows thatthe spark reaching the film was a small discharge. Beautiful .studies of these tree-fern-liketracings on sensitive films may be made at will by any operator, and it does not require muchof a current to fill the face of an 8 x 10 plate with wonderful markings. Each pole makes itsown peculiar tracing, and when both discharges meet the front and back of the plate at thesame time a merging of effects results which can easily be identified by one familiar withthese pictures. (Rebman, Ltd.). Plate 3.—Positive Phase of Electric Energy. Action upon the film of a single positivespray discharge from a high potential coil. This fern-like picture of a power in scientificmedicine vs^hich the profession is only just avs^akening to study, but which it has happily be-come a badge of ignorance to deprecate, is reduced from a magnificent photograph 18 by 23inches in size. It therefore does faint justice to the beautiful original. It is one of a remark-able series of fif
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Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidsystemofinst, bookyear1902
