BY THE SAME AUTHOR

THE INTERPRETATION

OF RADIUM

SCIENCE AND LIFE

ABERDEEN ADDRESSES

BY FREDERICK SODDY, M.A., F.R.S.

DR LEE'S PROFESSOR OF INORGANIC AND PHYSICAL CHEMISTRY
UNIVERSITY OF OXFORD; LATELY PROFESSOR OF CHEMISTRY
UNIVERSITY OF ABERDEEN

NEW YORK

E. P. DUTTON AND COMPANY

1920

TO MY STUDENTS

OF THE UNIVERSITY OF ABERDEEN

THIS BOOK IS DEDICATED

IN GRATITUDE FOR THEIR LOYAL AND

SYMPATHETIC APPRECIATION