16. Diversity in Plant and Animals (30:26)

Date:
1962
Main contributors:
Dr. Ray Koppelman, University of Chicago, American Institute of Biological Sciences
Summary:
Diversity of life resulting from evolution: recognition and treatment of diversity –definitions and taxonomic approaches; results of diversity in the plant kingdom; results of diversity in the animal kingdom, with particular emphasis on the evolution of man; diversity in time –divergence, convergence, extinction, the fossil record diversity in space –ecological relations in a habitat.

18. Nervous systems in animals (16:38)

Date:
1971
Summary:
Uses drawings and dissected specimens to compare the nervous systems in hydra, planaria, earthworms, and grasshoppers and shows the response of a paramecium, euglena, amoeba, hydra, and planaria to stimuli. Points out the spinal cord, spinal nerves, and parts of the brain in a freshly dissected pig and makes comparisons between the parts of the brain in frogs, birds, cats, and humans. Illustrates through still and animated drawings the basic elements of the neuron and the pathway of the nerve impulse during a reflex arc.

20. Small Town Library (10:39)

Date:
1953
Main contributors:
See Other Contributors
Summary:
Demonstrates how the facilities of a large city library are made available to rural libraries. Shows the library truck from Gary, Indiana, delivering books, pictures, and other materials weekly, free of charge, upon the written request of a small-town librarian. Indicates how such cooperation results in better public service.