THE NATURAL
AND ARTIFICIAL DISINTEGRATION
OF THE ELEMENTS

AN ADDRESS BY

Professor Sir ERNEST RUTHERFORD

Kt., D. Sc., LL. D., Ph. D., D. Phys., F. R. S.

ON THE OCCASION OF THE CENTENARY CELEBRATION
OF THE FOUNDING OF

THE FRANKLIN INSTITUTE

AND THE INAUGURATION EXERCISES OF THE
BARTOL RESEARCH FOUNDATION
SEPTEMBER 17, 18, 19, 1924

THE FRANKLIN INSTITUTE
PHILADELPHIA

THE NATURAL AND ARTIFICIAL DISINTEGRATION OF THE ELEMENTS