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268 SOCIETY ANNOUNCEMENTS Vol 42, No. 4 Kinematograph Weekly 322 (Dec. 16,1943), No. 1913 A Revolutionary Front-Line Camera (p. 27) R. H. CRICKS 323 (Jan. 13,1944), No. 1917 New Things to Come in Film Stock and Emulsions (p. 188) T. T. BAKER Motion Picture Herald 154 (Jan. 22,1944), No. 4 MacLeish Asks Film Library for Nation (p. 18) 154 (Feb. 5,1944), No. 6 Causes of Unsteady Image—and What to Do to Cure It (p. 88) C. E. SHULTZ SOCIETY ANNOUNCEMENTS ATLANTIC COAST SECTION The physical characteristics of film were discussed by Dr. John M. Calhoun and Mr. Ralph H. Talbot of the Eastman Kodak Company, Rochester, at a meeting of the Atlantic Coast Section on February 23d. Dr. Calhoun's topic was "The Physical Properties and Dimensional Behavior of Motion Picture Film." A brief description was given of the manufacture of motion picture film, particularly the film base, which was illustrated with an 8-min excerpt from an Eastman 16-mm film entitled "Highlights and Shadows." Dr. Calhoun explained the physical properties of film such as strength, stretch, tearing resistance, cold flow, brittle- ness, etc., as they bear on projection performance. Speaking on "Some Relationships between the Physical Properties and the Behavior of Motion Picture Film," Mr. Talbot told how such properties as de- velopment shrinkage, humidity change shrinkage, and keeping shrinkage affect image placement on both negative and positive films. Some of the most impor- tant factors relating to the wear life of film are the shape of the perforation, the relation between the pitch of the sprocket and the pitch of the film, and the align- ment of the film on the intermittent sprocket. Clyde R. Keith, Chairman, opened the meeting in the Roof Garden of the Hotel Pennsylvania with a 16-mm sound film, "Army-Navy Screen Magazine," a 15- min reel for service men. PACIFIC COAST SECTION Methods used by Hollywood studios to transfer 35-mm entertainment films to 16-mm for distribution to the armed forces were discussed at the Pacific Coast Section meeting on February 15th. Studio and laboratory representatives told of the large-scale program now in operation for supplying 16-mm prints, and the particular problems involved. Several excerpts from recent releases were pre- sented to demonstrate the results and limitations of 16-mm reduction prints.