Abstract
To the Editor:— I am grateful to Dr. Crandon for calling attention to an obvious error in the text of my article. It is quite true that a person with normal ascorbic acid reserves can subsist on an ascorbic acid-free diet for about 5 months before clinical scurvy becomes apparent. This is clear from Figure 2 in my publication. The second point is also well taken. It is obviously necessary to determine if a patient has had recent access to vitamin supplements before a diagnostic result can be interpreted properly. This is particularly true in the case of ascorbic acid, since its use as a food preservative may result in its introduction into the diet from unsuspected sources. For example, the writer has knowledge of an ascorbic acid depletion study that was unwittingly sabotaged by the eating of frankfurters containing a large quantity of ascorbic acid. One does not normally
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