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CLASSIFIED INDEX 75 Consumption of the Positive Arc Carbon, H. G. MacPherson, v. 38, no. 3 (Mar. 1942), p. 235. Suggested Clarification of Carbon Arc Terminology as Applied to the Motion Picture Industry, H. G. MacPherson, v. 37, no. 5 (Nov. 1941), p. 480. Report on Arc Lamp Noise Tests, Research Council, v. 36, no. 5 (May 1941), p. 559. Three-Wire D-C Supply for Projection Arcs, C. C. Dash, v. 28, no. 4 (Apr. 1937), p. 427. Application of the Copper-Oxide Rectifier to Motion Picture Projection, C. E. Hamann, v. 27, no. 3 (Sept. 1936), p. 341. Copper-Oxide Rectifiers for Motion Picture Arc Supply, I. R. Smith, v. 27, no. 3 (Sept. 1936), p. 331. Present Trends in the Application of the Carbon Arc to the Motion Picture Industry, W. C. Kalb, v. 27, no. 3 (Sept. 1936), p. 253. Investigation of Sources of Direct Current for the Non-Rotating High- Intensity Reflecting Arc, C. C. Dash, v. 26, no. 1 (Jan. 1936), p. 79. Mercury Automatic Recording of Photographic Densities, J. G. Frayne and G. R.' Crane, v. 45, no. 5 (Nov. 1945), p. 370. Automatic High-Pressure Mercury Arc Lamp Control Circuit, L. F. Bird, v. 45, no. 1 (July 1945), p. 38. Water-Cooled Quartz Mercury Arc, E. B. Noel and R. E. Farnham, v. 31, no. 3 (Sept. 1938), p. 221. Mercury Arcs of Increased Brightness and Efficiency, L. J. Buttolph, v. 28, no. 1 (Jan. 1937), p. 43. Projection Studv of Radiant Energy at Motion Picture Film Aperture, R. J. Zavesky, M. R. Null, and W. \V. Lozier, v. 45, no. 2 (Aug. 1945), p. 102. Carbon Arc Projection of 16-Mm Film, W. C. Kalb, v. 41, no. 1 (July 1943), p. 94 Effect of High-Intensity Arcs upon 35-Mm Film Projection, E. K. Carver, R. H. Talbot, and H. A. Loomis, v. 41, no. 1 (July 1943). p. 69. Carbon Situation and Copper Conservation, E. A \\illiford, v. 39, no. 1 (July 1942), p. 3. New 13.6-Mm Carbons for Increased Screen 1 ight, M. T. Jones, W W. Lozier, and D. B. Joy, v. 38, no. 3 (Mar. 1942), p. 229. Color of Light on the Projection Screen, I\f. R. Null, W. W. Lozier, and D. B. Joy, v. 38, no. 3 (Mar. 1942), p. 219. Improved Methods of Controlling Carbon Arc Position, D. J. Zaffarano, W. W. Lozier, and D. B. Joy, v. 37, no. 5 (Nov. 1941), p. 485. New 13.6-Mm High Intensity Projector Carbon, M. T. Jjnes. W. W. Lozier, and D. B. Joy, v. 37, no. 5 (Nov. 1941), p. 539. Characteristics of Intermittent Carbon Arcs, F. T. Bowditch, R. B. Dull, and H G. MacPherson, v. 37, no. 1 (July 1941), p. 98.