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Research Laboratories, E. L. Patch Company, Boston, Massachusetts
Department of Chemistry, University of North Carolina, Raleigh
Methods for determining the ascorbic acid content of blood plasma and chick rations have been described.
Data concerning the vitamin C (ascorbic acid) content of blood plasma for 8- and 12-week-old chicks have been accumulated.
The ascorbic acid content of the blood plasma of rapidly growing 8-week-old chicks averaged 2.039 mg. per cent. The amount varied between 1.562 and 2.234 mg. per cent.
The ascorbic acid content of the blood plasma of vigorous 12-week-old chicks averaged 2.054 mg. per cent, varying from 1.462 to 2.425 mg. per cent.
A comparison of the ascorbic acid blood plasma values of cockerels and pullets indicates that there is no consistent relationship between sexes.
Manuscript received 21 June 1938.