To the Editor:
—I have read with interest the report of the case "Atopy to Acacia (Gum Arabic)" by Drs. Aaron D. Spielman and Horace S. Baldwin (The Journal, August 5, p. 444). It seems that some clinicians speak of allergy and atopy in interchangeable terms. Arthur F. Coca in his volume on "Asthma and Hay Fever in Theory and Practice" (Baltimore, Charles C. Thomas, 1931) defines atopy as a "form of human hypersensitiveness which does not occur, so far as known, in the lower animals, but which is subject to hereditary influence." This suggestion, however, does not detract from the splendid contribution of this report.