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One Figure
Biochemical Laboratory, Connecticut Agricultural Experiment Station, and Department of Physiological Chemistry, Yale University, New Haven
A comparison has been made of growth and reproductive performance of the albino rat during three periods in the history of the colony at the Connecticut Agricultural Experiment Station. A gradual increase in rate of growth has been noted during the entire 25 years. This increase was very marked when a change of ration was made in 1931. The improved growth rate has been accompanied by superior reproductive performance.
Manuscript received 26 June 1935.