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PART III— FOREST CONSERVATION The need for careful conservation of our forest resources is brought home in this concluding film of the series. Careful lumber- ing is outlined, with reminder of the damage caused by poor timber practices. Mismanaged forest areas are shown, land which cannot hold water and whose soil is washed away by rain, causing floods, erosion, and filling of lakes and reservoirs with the eroded silt. Scientific forestry methods—sectional lumbering, reforestation, spacing and thinning are illustrated. Special attention is paid to the problems and difficulties of the small forest owner, and the film sug- gests state and federal aid with the tending, harvesting and market- ing of his crop and the cheaper purchase of stock. The responsibility of every forest owner as a trustee, and the importance of his trust, are emphasized in closing. audience: Junior high; senior high; college; adult THE LIVING WATER SERIES Color—Sound Encyclopaedia Britannica Films Two parts; Rental—Sale 33 minutes complete PART I— NATURE'S PLAN The first of two films in the Living Water Series portrays the principles and importance of the natural water cycle—the continu- ous moving of water from ocean to air, from air to earth, and from earth back again to the sea. This section covers the evaporation, the forming of water vapor in the clouds, and the release of this moisture as rain and snow. It is emphasized that the force which moves the water lies in the heat delivered by the sun to the earth, and in the ability of the water to store this heat. Fog belts and thunderheads are explained, and documented, as well as an ex- planation of watersheds, the natural basins that trap water and divert it into streams or river systems. There is also a sequence on underground water. PART II— MAN'S PROBLEM This sequel film tells the story of the serious problems confront- ing Americans in the care, protection and use of our precious water supply. Opening scenes highlight the incredible amount of clear water needed in an industrial world. The story of water in Los Angeles is used to document a city water supply. Other sequences illustrate some of the great problems which the building of a dam 10