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Dark Adaptation Studies with Adults and Children, Using the Biophotometer

Description: The present study is a part of a long-time cooperative study of the Home Economics Department of the North Texas State Teachers College, begun in 1940. The purpose is to compare the dark adaptations of second and third-grade children made in 1940 with those made of the same children in 1941 and in 1942. Also included in this study is the comparison of a group of freshmen college men made in 1940 with a group of twenty-five men made in 1942. An attempt is also made to determine whether an individual has higher dark adaptation on sunshiny days than on cloudy days.
Date: 1942
Creator: Collins, Mary Margaret
Partner: UNT Libraries

How to choose and use carrots.

Description: Provides simple instructions for choosing the best quality carrots, storing them, and cooking them.
Date: July 1950
Creator: United States. Department of Agriculture.
Item Type: Book
Partner: UNT Libraries Government Documents Department