The Theory of Hearing

IN reference to Mr. R. L. Wegel's letter to NATURE of September 12, p. 393, under this heading, I think it must be admitted that he and his co-workers at the Bell Telephone Laboratories have contributed a wealth of new facts bearing on the theory of hearing. It will probably be some time before these facts are fully interpreted and correlated, so that their significance in regard to the theory can be rightly appreciated.