Answer to Prof. Störmer's remark

Referring to my "Note on the Nature of Cosmic Rays,"(1) Prof. Störmer draws attention to the fact(2) that he had treated the problems of the motion of electrons in the magnetic field of the earth many years ago. He gives the complete list of his publications on the subject and, indeed, I must confess that I was not aware of his work on the particular phase of the problem to which my note is devoted.