Abstract :
F. M. Clark: I think if you read this paper carefully you will come to the conclusion that there is a considerable difference of opinion among “reliable experimenters.” That is due no doubt, to a fact which heretofore has been greatly ignored. Not until recently have the chemist and physicist come into agreement with regard to the structure of the atom. The chemist has had his own chemical atom, and the physicist his own physical atom. The real reason has been that the physicist has entirely neglected the chemist´s problems and the chemist has been guilty of neglecting the problems confronting the physicist.
