our major sources of water. It also shows the methods for conserv- 

 ing surface and ground water, as well as for reclaiming and purifying 

 water, in order to avoid future shortages. 



Everyman's Empire 



Color Sound U. S. Department of Agriculture 



20 minutes Free Loan 



Presents our National Forests and their benefits to the nation. 

 Gives their value in preserving watersheds and soil, for timber and 

 range land conservation, for preserving wildlife, and for recreation 

 of all kinds. Excellent photography. 



Forest Conservation (Part III of The Living Forest Series) 



Color Sound Encyclopaedia Britannica Films) 



11 minutes Rental Sale 



Treats timber as a crop. Describes the effects of mismanaging 

 the timber supply. Such effects include shrinking of forest resource, 

 soil erosion, and silt-filled reservoirs. Emphasizes the advantages of 

 conserving timber supply. 



Man's Problem (Part II of The Living Water Series) 



Color Sound Encyclopaedia Britannica Films 



20 minutes Rental Sale 



Describes the serious problems man encounters in the use, care, 

 and protection of his fresh water supply. It calls attention to the 

 incredible amounts of clean water that man needs in his modern 

 industrial civilization, and it shows what the city of Los Angeles 

 has had to do in order to meet the ever-growing demand for more 

 water. The film illustrates some of the problems engendered when 

 big dams are created. It shows how destructive a river in flood can 

 become and describes some of the causes for such a condition. 

 Finally, the film discusses water pollution and describes both natural 

 and artificial methods for purifying foul water. 



Marsh Waters Waste or Wealth 



Color Sound University of Minnesota 



15 minutes Rental 



Excellent discussion of the problems of marshes, the values 

 gained both by draining them and by maintaining them as marshes. 

 Also shows the surface water problem as seen through the eyes of 



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