Abstract
<h3>To the Editor:</h3> —In his paper on immunologic observations in autumnal hay-fever (The Journal, May 3), Dr. Harry S. Bernton discusses the Scheppegrell four-group classification of hay-fever pollens as published in the<i>Boston Medical and Surgical Journal</i>, July 12, 1917. This, however, has since been revised, the new classification of three major and five minor groups having been published in the<i>New York Medical Journal and Record</i>, June 20, 1923. In this report, the following statement is made: "While the grouping of hay-fever pollens from a biologic"—and botanic; the ragweeds and artemisias, for instance, both belong to the<i>Compositae</i>family, but are divided into separate groups— "viewpoint has proved of great advantage in simplifying the diagnostic tests and treatment of hay-fever, our experience has demonstrated that the most common member in the patient's vicinity, of the group to which he reacts, should be selected for his immunization." Regarding the ragweed
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