Cincinnati, June 27, 1899.
To the Editor:
—You do me great injustice in your paraxanthin editorial in the Journal of June 24. In the heading you use the word "disprove" while Putnam and Pfaff only claim that their research "indicates," etc. Dr. Pfaff, in the original title of his paper, used the word "disprove," but after my discussion of his paper, which you have not seen, he changed the title to read "indicates." The facts are that the leucomain theory of the origin of migraine is now stronger than ever, and Dr. Pfaff, after my discussion of his paper, did not claim that he had disproved the theory. In a forthcoming paper I shall make this matter plain, and in the meantime I refer you to the discussion of Dr. Pfaff's paper for further information. The use of the word "disprove" is most unfortunate in view of the large circulation