81. Designing a set (10:10)

Date:
1951
Summary:
Describes each step in planning and designing a stage set. Shows how the realization of the set emerges from rough sketches and a scaled model.

82. Developmental genetics - I: a lecture by Dr. L. C. Dunn (29:40)

Date:
1959
Summary:
Portrays the role of developmental genetics in dealing with ways phenotypes come into being through the action of genes. Presents a complete discussion of the Creeper domestic fowl--its genetic basis, morphology, embryological history, and the experimental work that led to an understanding of how this gene affects early development to produce the morphological features seen as the outcome of the developmental process. Lecture given by Dr. L. C. Dunn.

83. Developmental genetics - II: a lecture by Dr. L. C. Dunn Columbia University (29:41)

Date:
1959
Summary:
Describes the ways in which genes produce phenotypic differences by acting very early in embryonic development. Shows that this action may take place at a distance through chemical messengers (pituitary dwarfism in the house mouse, lethal giant larva in Drosophila), or it may involve tissue induction systems (Brachyury and taillessness in the house mouse). Discusses the development of eye color in Drosophila as a model of how each of the steps in a chain of chemical processes leading to development is under genic control. Lecture given by Dr. L. C. Dunn.

84. Diary of a car thief (11:21)

Date:
unknown/unknown
Summary:
Follows a car thief, played by an actor, as he steals cars and offers recommendations to the spectator on how to protect their car. Includes footage of various people looking through documents, reenactments of cars being stolen and owners being upset when they realize what's happened, the process of car owner alerting police to theft, being interviewed by police, and police searching for the car; car being broken apart at chop shop; tips on what car owners can do to reduce the chances that their car will be stolen; women looking at microfilm machines; shot in and around Indianapolis; ends with car their behind bars.

85. Directing a play (11:21)

Date:
1951
Summary:
Introduces problems which arise in the presentation of a play and shows how the director solves them.

86. Discovery Of A Landscape-English Lakes (30:55)

Date:
1956
Summary:
Shows through readings, paintings, and natural photography the development of the portrayal of English lakes and landscapes by painters, poets, and others. Depicts the printing of illustrated tour guides and other books to create interest in the English lake country. (BBC) Film.

87. Distributive education (16:00)

Date:
1955
Summary:
Portrays the nature and the role of the Distributive Education Program in the state of Virginia in preparing students for possible future jobs. Shows ow personality traits of an individual provide the basis upon which distributive education training can be pursued and depicts the duties of the distributive education coordinator and the activities of the distributive education clubs.

89. Dong Kingman (15:21)

Date:
1954
Summary:
This film follows the Chinese-American artist, Dong Kingman, as he carries a single painting through various stages to its completion. It introduces Kingman's finished work and explores the broader aspects of his background and his approach to art.

90. Drilling and tapping cast steel (18:58)

Date:
1941
Summary:
Technique of drilling and tapping blind holes in cast steel on a radial drill. A drill jig with loose bushings is used for locating the holes. Setting up the work on the table of the machine, setting the jig on the piece to the layout lines. Calculating the size of the tap drill and the method used when setting the machine to drill a number of holes to the same depth. A wizard drill chuck is used in the drilling operation, and a standard friction chuck for holding the tap. The action of a tap in a hole is shown in animation and the reason why a tap binds in the hole and must be reversed frequently when tapping in tough metals.