14201. Sedimentation (29:23)

Date:
1959
Summary:
Dr Harbaugh's guest is Dr. Stanley Davis, assistant professor of geology at Stanford University. A graduate of the University of Nevada with a M.S. from the University of Kansas and a Ph.D. from Ya...

14202. See how they learn (29:45)

Date:
1956
Summary:
Demonstrates modern techniques for teaching primary grade pupils to read, write, and do simple arithmetic. Shows children, participating in such classroom activities as reading-readiness tests, sto...

14203. Seed Dispersal (14:50)

Date:
1950
Summary:
Uses time-lapse photography to demonstrate the scattering of seeds by wind, water, humans, and animals.

14204. Seed dispersal (10:55)

Date:
1931
Summary:
Shows ways in which seeds of plants are scattered in order to insure propagation of the species: dispersal by wind, transportation by animals, and forceful propulsion from the seed case. Describe...

14205. Seeds (22:26)

Date:
1970
Main contributors:
National Instructional Television
Summary:
From the series Ripples. Delicate furries, colorful sumac, and maple seeds drift and fall everywhere. Inside each seed is a baby plant, waiting to get out,waiting for water to start it growing. A l...

14206. Seeds of destruction (09:35)

Date:
1948
Main contributors:
The Conservation Foundation; New York Zoological Society; John H. Storer
Summary:
The fourth in the "Living Earth" series. Shows what happens when nature's balance is upset by exploitation of natural resources. Suggests that organized planning and conservation can arrest the d...

14208. Seeing double (29:19)

Date:
1957
Summary:
How and why do some writers arrange the fragments they have selected from actuality in an overlapping repetitive way?