See and hear : the journal on audio-visual learning (1945)

NATURAL SCIENCE .... at its exciting best! SEASHORE ODDITIES Beautifully filmed In Koda- chrome at Hopkins Marine Laboratory, this film reveals authentically scientific secrets of Marine Life in the first fathom of ocean water. Shows how the four main family types of Marine Invertebrates secure food and maintain their species. The presenta- tion is geared to any study level. 2 reels Kodachrome . .. 20 min. $160.00 This Film Not Available in Calif., Wash., Greg.. Ida., Nev., Arlr. LIFE CYCLE OF THE MOSQUITO An unusually informative film on the mosquito. Done in photomicrography to bring out every detail of the com- plete metamorphosis from egg, through larvae ond pupa stages, to odult emer- gence. Prepared with cooper- ation of U. S. Health Service, New Jersey State Agricultural Experimental Station at Rutgers and the Rockefeller Foundation International Health Division. 1 reel ... II min. . . . Black & White $45.00 WRITE FOR OUR SUPPLEMENTARY FILM LIST DESCRIBING AAANY OTHER EXCEPTIONAL FILMS. I'OIIH^ \!^^ cV^HMj/^^ 18 East 41st St., New York 17, N. Y. Motion Pictures in Soil Conservation (continued from page 17) farmer, and disastrous dust storms. PRICE OF PROGRESS (Sound) 20 minutes Story of the white man's destruction of America's natural resources, his late awakening to the fact that these resources must be saved, and his present efforts to do something about it. (USDA) RAIN ON THE PLAINS (Sound) 8 minutes Importance and value of applying proper conservation measures to soil which lacks a sufficient water supply. How by properly storing rainfall, by means of contour tilling and terraces, ground remains fer- tile, capable of supporting vegeta- tion. (USDA) REALM OF THE WILD (Sound) (Color) 30 minutes American game birds and big game photographed in the national parks. Portrays: Canada goose, ducks, owl, Canada jay, sage hen, squirrels, moose, deer, buffalo, elk, mountain goats and sheep, ptarmigan, etc. Shows attempts to balance wild life with the remaining forage food. (USDA) THE RIVER (Sound) 33 minutes Dramatization of the story of the Mississippi from pioneer days of river commerce to recent floods and erosion disasters. Includes conserva- tion work being carried on. (USDA) SAVE THE SOIL (Sound) 11 minutes Shows various ways of conserving soil fertility, including terracing and cover-cropping to prevent ero- sion; crop rotation; use of legumes to build up the nitrogen and humus content of the soil; control of waste caused by fire; use of manures and commercial fertilizers when neces- sary. (USDA) SOIL EROSION (Sound) 7 minutes Survey of the natural and man-made conditions which brought on the great dust storms of recent years and some of the measures taken to cor- rect them; digging a reservoir; ter- racing and contouring partially eroded land; transplanting sod; planting wind breaking trees. (March of Time) .STRENGTH OF THE HILLS (Sound) 10 minutes In llie hill country of the lower Ohio and in the Ozark Mountains the forests have always played an important part in the support of community life. These people real- ize that the strength of the hill country lies in its farms and forests. (U.S. Dept. of Agriculture) STOP FOREST FIRES (Sound) 9 minutes General discussion of the problems of the forest fire, and striking scenes of major forest fires. (USDA) THIS IS OUR LAND (Sound) 27 minutes This is the story of the land: the im- portance of soil conservation; needs of plants and how they are supplied; how a plant functions; need for or- ganic matter; and erosion control. (Ethyl Corporation) TOMORROW'S TIMBER (Sound) (Color) 18 minutes A survey of Canadian timber re- sources, lumber industry and meth- ods of forest-fire prevention. (Na- Holders of Southern California Franchises VICTOR ANIMATOGRAPH 16JV\M. PROJECTORS AND SANDWICK BOWEN RECORD REPRODUCERS AUTHORIZED SERVICE FACTORY DISTRIBUTORS Educational Color Slide Sets A Record of Accomplishment Microphones — Screens — Visual Aids COAST VISUAL EDUCATION CO. 6058 SUNSET HOLLYWOOD 42 SEE AND HEAR