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January 1, 1948

Staats fluorspar mine, Beaver County, Utah : memorandum report

No abstract available.

Authors

Donald G. Wyant

January 1, 1948

Standardization of methods of expressing lengths and weights of fish

Fishery workers in the United States and Canada are unable to think readily in terms of the metric system of weights and measurements. Even long experience does not make it possible to form a clear idea as to the actual size of fish for which lengths and weights are given in metric units, without first converting to the English system. A more general adoption of the English system of weights and m

Authors

Ralph Hile

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1948

Storage by bobwhite quail of Vitamin A fed in various forms

According to studies conducted with 236 bobwhite quail chicks at Patuxent Research Refuge, crystalline carotene in cottonseed oil fed at levels of 3000 I.U. (the requirement for optimum growth), 5000 I.U., and 25,000 I.U. per pound of feed, was utilized only 1/3 to 1/7 as efficiently as vitamin A alcohol; 1/2; to 1/10 as natural vitamin A ester; and 1/4 to 1/17 as vitamin A acetate, based on the s

Authors

R. B. Nestler, J.V. Derby, J.B. DeWitt

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1948