Abstract
The ascorbic acid content of the adrenals of the bat was determined in hibernating and active animals following epinephrine and ACTH treatment of captive animals. Non-captive bats were studied during hibernation and active states, and following arousal from hibernation. Captivity per se did not influence the adrenal vitamin content of hibernating or active bats. Among the captive animals, ACTH was effective in hibernating and epinephrine in active animals in decreasing the adrenal ascorbic acid. The most marked depletion of the adrenal vitamin occurred in the non-captive hibernating bats stressed by arousal, a finding well correlated with the blood corticosterone content reported for the hamster, another hibernating species, after similar treatment. The studies indicate a relationship of ascorbic acid to adrenal physiology of the bat comparable to that observed for some other species.

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