An international system of electro-therapeutics : for students, general practitioners, and specialists . ^ be interposed between thegeneral system patronized and the lamp, the rheostat or gradual resist-ance coil, which accompanies all carefully-made instruments, will enable. Fig. 2.—Authors Lamp for Electric iLiiTTMiNATioir. a, storage battery; 6, incandescent lamp; c, circuit-closer. the surgeon to avoid all danger without the use of the current-controller,which is but a modified form of rheostat. Although I have had no opportunity to try it, the lamp shown onnext page (Fig. 3), and recently
An international system of electro-therapeutics : for students, general practitioners, and specialists . ^ be interposed between thegeneral system patronized and the lamp, the rheostat or gradual resist-ance coil, which accompanies all carefully-made instruments, will enable. Fig. 2.—Authors Lamp for Electric iLiiTTMiNATioir. a, storage battery; 6, incandescent lamp; c, circuit-closer. the surgeon to avoid all danger without the use of the current-controller,which is but a modified form of rheostat. Although I have had no opportunity to try it, the lamp shown onnext page (Fig. 3), and recently introduced by C. W. Isaac, of London,^seems to present many advantages by doing away with all shadows. Itconsists of a small incandescent lamp so adjusted that the arch of thefilament is as nearly as possible coincident with the focal point of a small,silvered, parabolic reflector one inch in diameter at its mouth. Thereflector is pierced to admit the lamp, and mounted upon the extremit}^of a metal tube ; in the tube slides a cylindiical block of ebonite, whichserves as a carrier for the lamp; it can be fixed in any position by a • British Medical Journal, December 31,1892. (Made by Beddoe, 29 Nine Elms St., London.) 1-6 SAJOUS.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectuterus, bookyear1894
