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MOTION PICTURES 79 hammer, and carpenter's claw hammer. (TF 9-2029; 11 minutes) 32, 41 Hand Ditching for Malaria Control U.S. Public Health Service, 1948. (Mal- aria Control Series) How permanent drainage solves mosquito problem in areas of high mosquito count with re- claimed land offsetting cost of construc- tion. Principles of hand ditch construc- tion. (CDC^-047; 6 minutes, color) 27 Hand Soldering U.S. Office of Education, 1944. (Acces- sory Assembly Series. Tools and Pro- cedures No. 1) Theory of soldering; how to prepare soldering irons and torches; clean and prepare the work; fasten joints; solder wire and lug joints; and seal seams. Animation. Supplemen- tary filmstrip, same title, also available. (OE 479; 20 minutes) 32, 41 Handicraft Town U.S. Economic Cooperation Administra- tion, 1950. How the importation of Marshall Plan steel for the manufacture of hand-wrought cutlery revived a small North Italian town, Maniago, dependent for its livelihood upon this industry since the 14th century. (10 minutes) 24 Handling Livestock for Market U.S. Office of Education, 1945. (Farm Work Series. Livestock No. 3) Causes of losses in marketing livestock; how to prevent injuries to livestock on the farm, before shipment, when loading, and dur- ing shipment. Supplementary filmstrip, same title, also available. (OE 459; 21 minutes) 32, 41 Handling a Lifeboat Under Oars. Part 1: Rowing U.S. Coast Guard, 1943. Proper wrist and body movement in rowing, and the four phases of a complete stroke. Straight photography and stop frames. (12 min- utes) 41 Handling a Lifeboat Under Oars. Part 2: Commands U.S. Coast Guard, 1943. Various com- mands of the coxswain pertinent to handling a lifeboat; proper stance for coxswain and men. (10 minutes) 41 Hang On U.S. Veterans* Administration, 1946. Trailer to encourage retaining National Service Life Insurance. (l l /z minutes) 31 Hannibal Victory U.S. Maritime Commission, 1946. How victory ship, SS Hannibal Victory, deliv- ered a cargo of 8 railroad locomotives, tenders, flatcars, rails etc. from San Francisco to the Army in the Philip- pines; manufacture of cargo in Hannibal, Mo.; loading; life and work on voyage. (60 minutes, color) 32 Hardness Testing (Rockwell) U.S. Office of Education, 1944. (Aircraft Work Series. Inspection No. 5) Need for hardness testing; how to set up the Rockwell Hardness Tester; select and seat the penetrator; select and mount the anvil; test the accuracy and adjust the timing of the machine; and test flat and curved surfaces. Supplementary film- strip, same title, also available. (OE 149; 18 minutes) 32, 41 Harnessing Floods U.S. Department of the Army, 1950. Construction of a large earth dam and benefits derived from such a structure. (14 minutes, color) 13 Harvesting Native Grass Seed U.S. Department of Agriculture, 1945. Soil and water conservation value of native grass seed; tall and short grass harvesting methods; mechanical changes