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MOTION PICTURES 17 where primitive conditions prevail im- proves the quantity and quality of milk. Portuguese version "Produza Mais Leite" and Spanish version "Mas Leche" also available. (10 minutes, color} 32, 37 A Better Tomorrow U.S. Office of War Information, Overseas Branch, 1945. Children and youth at school in New York City—drawing, read- ing, and morning milk in elementary school class; boy receiving vocational guidance from high school principal; social science class studying fire preven- tion in school community. (24 minutes) 32, 41 The Bevel Protractor U.S. Office of Education, 1945. (Machine Shop Work Series. Precision Measure- ment No. 7) Principles of the vernier bevel protractor; how to set and read the bevel protractor; use the protractor to lay out angular work and check angles. Supplementary filmstrip, same title, also available. (OE 50; 15 minutes) 32, 41 Beveling, Grooving, and Rounding U.S. Department of the Navy with the cooperation of U.S. Office of Education, 1944. (Optical Craftsmanship Series) How to groove, bevel, and round for flat and curved surfaces; bevel edges of all optical surfaces to prevent chipping; adapt surface grinder for grooving; two common types of rounding machines. (MN 2449-g; 28 minutes) 41 Beveling, Mitering, Rabbeting, and Dadoing U.S. Office of Education, 1945. (Precision Wood Machining Series. Operations on the Variety Saw No. 2) How to cut a bevel with tilted fence; set a miter gage; use a stopblock in mitering; set the fence and blade for cutting rabbets; install and use a dado head. Supplemen- tary filmstrip, same title, also available. (OE 307; 19 minutes) 32, 41 Beveling, Stop Chamfering, and Tap- ering Square Stock U.S. Office of Education, 1945. (Precision Wood Machining Series. Operations on the Jointer No. 2) How to set fence for bevel cutting; adjust the proper amount of cut; cut chamfer; set the infeed and outfeed tables and stop blocks; cut tapers. Supplementary filmstrip, same title, also available. (OE 303; 20 min- utes) 32, 41 The Big Wheel U.S. Department of the Army, 1950. History of 35th Infantry Division. (M 7723; 17 minutes) 32, 41 Bikini: Radiological Laboratory U.S. Atomic Energy Commission, 1950. How a group from the University of Washington made a survey of the effect of radioactivity on plant and marine life at Bikini three and one-half years after the Able and Baker tests. (22 minutes, color) 23, 41 Birds of Woody Island U.S. Fish and Wildlife Service, 1940. Life and habits of common terns, ring- billed and California gulls, double-crested cormorants and white pelicans in Bow- doin (Montana) National Wildlife Ref- uge. Scenes of young being fed by regurgitation. (15 minutes, color, silent) 20 The Birth of a Giant U.S. Department of the Army, 1950. Construction of McNary Dam on Colum- bia River: importance of providing flood control, navigation, and hydroelectric power. (28 minutes, color) >- 13 Birth of the B-29 U.S. Department of the Army, 1944. The story of the development of the famous B-29 Superfortress. (WF 30; 21 minutes) 32, 41