Our Soil Resources (Formation And Conservation)
Encyclopaedia Britannica Films Inc.
05:49:17 CU of plow, disc & cultivator thru soil & young plants.
05:49:37 View of three Teton mountain peaks. CU of rocks & cracks. Illustrated animated diagram of cracking rock thru water freezing. Aerial photo of glaciers. Map of North America showing ice age location. CU of eroded desert rock & illustration of warming expansion & night cooling w/ resuting cracing. Lichens on rocks in CU & others weathering by plants to form small soil level.
05:51:26 Animation of wind driven sand cutting into rocks. Mountainside soil w/ plants decaying. Earthworms burrowing in cutaway of soil. Small sagebrush & desert grass. Farmland.
05:52:41 World map showing four soil zones of earth. Shown on map of US w/ dry Rocky Mountain area & shots of cactus & mesquite in desert. Farmer irrigating from ditch bank to raise alfalfa. Midwest w/ grassland plains. Plowing native grasses in prairie land. Northeast & northwest forests w/ farms among trees. Southest United States w/ softwood forests; cotton picking & CU of bolls.
05:56:29 Corn field w/ tall corn; animated diagram of nutrients up thru plant from soil. Corn picker pulled & CU of corn falling into wagon. Water sitting around corn plants & diagram of water leaching thru soil; manure spreader pulled; horses pulling fertilizer spreader. Heavy, deep erosion on side of corn field. LS of shack sitting on eroded land. (GOOD).
05:58:09 Illustration of hillside & methods of preventing erosion. Pan over clover field on slopes. Contour illustrated & field shown. LS of barn & farm fields. The End.
Weather; Geology; Geography; Elementary Educational Films; Graphics;1947; 1940s;
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Our Soil Resources (Formation And Conservation) Encyclopaedia Britannica Films Inc. 05:49:17 CU of plow, disc & cultivator thru soil & young plants. 05:49:37 View of three Teton mountain peaks. CU of rocks & cracks. Illustrated animated diagram of cracking rock thru water freezing. Aerial photo of glaciers. Map of North America showing ice age location. CU of eroded desert rock & illustration of warming expansion & night cooling w/ resuting cracing. Lichens on rocks in CU & others weathering by plants to form small soil level. 05:51:26 Animation of wind driven sand cutting into rocks. Mountainside soil w/ plants decaying. Earthworms burrowing in cutaway of soil. Small sagebrush & desert grass. Farmland. 05:52:41 World map showing four soil zones of earth. Shown on map of US w/ dry Rocky Mountain area & shots of cactus & mesquite in desert. Farmer irrigating from ditch bank to raise alfalfa. Midwest w/ grassland plains. Plowing native grasses in prairie land. Northeast & northwest forests w/ farms among trees. Southest United States w/ softwood forests; cotton picking & CU of bolls. 05:56:29 Corn field w/ tall corn; animated diagram of nutrients up thru plant from soil. Corn picker pulled & CU of corn falling into wagon. Water sitting around corn plants & diagram of water leaching thru soil; manure spreader pulled; horses pulling fertilizer spreader. Heavy, deep erosion on side of corn field. LS of shack sitting on eroded land. (GOOD). 05:58:09 Illustration of hillside & methods of preventing erosion. Pan over clover field on slopes. Contour illustrated & field shown. LS of barn & farm fields. The End. Weather; Geology; Geography; Elementary Educational Films; Graphics;1947; 1940s;