61. The Speed of Sound (14:38)

Date:
1956
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Summary:
Explains that a major problem of jet propulsion is increasing the speed of the expanding gas in the jet engine. Shows how the speed is increased by the addition of heat, more gas,and heavier molecules. Points out that there is no limit tot he speed that gas will move through the end of propulsion chambers if a material can be obtained that will stand the increased temperature. (New Mexico College of A.& M.A.) Film.

65. Writers of today. Archibald MacLeish (28:40)

Date:
1955
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Summary:
Walter Kerr, drama critic for the New York Herald Tribune interviews distinguished American poet, Archibald MacLeish. Mr. MacLeish outlines his ideas on what poetry is and should be, including ideas on its uses. For him, poetry must come from experience and give form to experience. He sees younger writers as turning inward toward more spiritual and emotional themes and expressions.

66. Hogarth the Satirist (15:39)

Date:
0000
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Summary:
Presents Hogarth's most remarkable engravings, emphasizing his illustration of the Rake's Progress. (RTF) Film.

68. Seurat's Parisian Sundays (15:44)

Date:
0000
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Summary:
Uses paintings by Seurat to a theme about Parisian Sundays. Provides a general introduction to the series. (RTF) Film.

70. The Contest For North America (30:12)

Date:
0000
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Summary:
Traces the eighteenth century struggle for control of North America. Discusses the English-French rivalry and the French defeat. Considers England's pause to consolidate her position before attacking Spain and the consequences of her delay. (KETC) Kinescope.