. Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray . serve a double purpose by furnishing a light forprinting developing paper. Any handy tinner will make a light-proof box with a ruby glass window for a small price. By insertinga large cork in a hole in the lid, the light is complete except theelectric wiring. Bore a small hole through the cork for the passageof the electric wires, connect them to the regulation socket, andscrew in an 8-candle power electric bulb. Place two panes of
. Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray . serve a double purpose by furnishing a light forprinting developing paper. Any handy tinner will make a light-proof box with a ruby glass window for a small price. By insertinga large cork in a hole in the lid, the light is complete except theelectric wiring. Bore a small hole through the cork for the passageof the electric wires, connect them to the regulation socket, andscrew in an 8-candle power electric bulb. Place two panes of ruby 222 PRACTICAL ELECTRO-THERAPEUTICS AND X-RAY THERAPY glass, with a strong piece of ruby celluloid between them, in the slot;then connect the wires to the main line with a switch located nearthe box, and your ruby light is complete. Developing and Finishing Trays.—The best and most conven-ient trays are those made of first-grade steel, well enameled. In se-lecting the larger variety, care should be exercised in getting traysthat are not warped. Two to four trays of a size are sizes in general use are 8x10 and 11x14 inches. Of course the. Fig. 106.—Developing and finishing trays. number of trays necessary will depend upon the amount of workto be done. Where trays are used for fixing and washing, it willrequire several of a size, but, if a fixing and washing box is used,only one or two trays of a size will be necessary. A good washingbox is almost a necessity where cold water can be had throughoutthe year. Printing Frames.—It is only occasionally that a print will beneeded from a finished negative, but every operator should knowhow to make one when needed. To make a print from a negativeit is necessary to have a printing frame for each size of use will be explained under the head of printing and finishing. Plates and Films.—Photographic dry plates, papers, and films arevery sensitive to the x-ray, while wet or collodion plates are saidto be
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1912
