45. Fundamentals of diet (10:45)

Date:
1943
Main contributors:
Encyclopaedia Britannica Films Inc., George R. Cowgill
Summary:
Describes the basic types of foods needed in daily diet and explains the contribution made by each type of food to bodybuilding. Depicts examples of controlled experimental feeding. For intermediate grades, high school and adult groups.

46. The northwestern states (11:11)

Date:
1943
Main contributors:
Erpi Classroom Films Inc., Howard W. Odum
Summary:
Presents the characteristics of the states of Montana, North Dakota, South Dakota, Wyoming, Idaho, Utah, Colorado, Nebraska, and Kansas. Shows the topography, rainfall, drainage, fauna and flora, people, metropolitan centers, scenic and recreational features, transportation and commercial activities, natural resources, and agricultural situation. Indicates the interdependence of this region with other regions of the country.

47. Industrial provinces of Canada (22:19)

Date:
1943
Main contributors:
Erpi Classroom Films Inc., J. Russell Smith
Summary:
Orients the industrial provinces, Ontario and Quebec, as the heart of the Dominion of Canada. Traces the settling of the region and shows the distribution of population, typical activities, products, imports, and the relation of this region to the rest of Canada, to the United States, and to other regions of the world. An instructional sound film.

48. Maritime provinces of Canada (11:08)

Date:
1943
Main contributors:
Erpi Classroom Films Inc., J. Russell Smith
Summary:
Orients the maritime provinces in relation to the rest of Canada and the United States. Portrays the settling of the region, involving flows to and from the United States. Includes also fishing, fur farming, lumbering, farming, mining and smelting, and commerce.

49. Sound recording and reproduction (sound on film) (11:03)

Date:
1943
Main contributors:
Erpi Classroom Films, Inc.
Summary:
Through animated drawings explains the principles of recording and reproducing sound on film. Through demonstrations reveals the functions of the microphone and the light valve and shows how the motion picture projector reproduces sound from a sound track. An instructional sound film.

50. Pneumonia (11:28)

Date:
1943
Main contributors:
Erpi Classroom Films, Inc., Dale C. Stahle, M.D., Harrison F. Flippin, M.D., Hobart A. Reimann, M.D., Edward L. Bortz, M.D., Charles L. Brown, M.D., W.W.G. Maclachlan, M.D., Pennsylvania State Department of Health
Summary:
Recent advance in the control of pneumonia, deadly enemy of the human race. Modern methods of treatment and nursing. An instructional sound film.