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Fifth Edition
AGRICULTURE
25
SOILS AND SOIL CONSERVATION GROUP 15 Soils and Soil Conservation
America — Garden with a Protected Soil (1) The conservation of natural resources. (23, 69, 156)
America — The Storehouse of the World (1) Our land, the granary that assures the world against famine. (66A)
Ancestry and Classification of Soil (1) One of the series — The United States, a Ten Talent Nation. (23)
Anchored Acres (1) Soil erosion damage and approved modern engineering practices for overcoming this evil. Brush and soil saving dams, terracing, and crop rotation. (144)
Limestone for Ailing Clover (1) County agent gives soil the "acid" test, finds it "sour," and prescribes limestone; a practical demonstration of the use of limestone in the midwest. (144) ***Pay Dirt (2 J An argument for judicious use of fertilizers in keeping fine soils up to their maximum yield. (73)
Soil Conservation (1) One of the series — The United States, a Ten Talent Nation. (23)
(See also Groups 48-9) GROUP 16 Irrigation
California Gold (4) From a wilderness to 60,000 acres of oats, wheat, barley, alfalfa, beets, potatoes, within a decade. (69, 156)
Irrigation (1) Utilization of natural reservoirs for distribution of waters to parched lands. (49)
Irrigation (1) A visual story of the results of irrigation on arid wastes For sale only. (58)
Irrigation in Montana (1) Self-explanatory. (61) ***Making the Desert Blossom (1) Describing' operations of the Bureau of Reclamation in irrigating arid lands in the West. (49, 143)
* Reclaiming Arid Land by Irrigation (1) Need for irrigation in our arid West; the areas reclaimed by various private and public enterprises; the methods the farmer employs to irrigate his fields; some of the great dama and reservoirs. (134)
The Roosevelt Dam (1) Converting the arid desert to fertile farms. (XXX)
Through Shoshone Valley (1) Greatest irrigation plant in the world. (28)
(See also Groups 48-9)
THE HISTORICAL CHARTS OF THE LITERATURES
By Nelson L. Greene, A. M. (Princeton)
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