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1 From The Burroughs Wellcome & Co. U. S. A. Experimental Research Laboratories, Tuckahoe, New York
1. Significant differences in the minimum hypnotic (H 50) and minimum lethal (L 50) doses of unsymmetrical n-propyl-o-tolylurea were found in groups of mice fed two widely different diets.
2. There is a remarkable difference in the duration of anesthesia following the administration of several hypnotics to mice fed a variety of diets.
Submitted on May 19, 1938