Front matter
Reading edition

CONCERNING THE NATURE OF THINGS
By
SIR WILLIAM BRAGG
K. B. E., D.Sc., F. R.S.
Illustrated with Many Diagrams and Plates

HARPER & BROTHERS, PUBLISHERS NEW YORK AND LONDON MCMXXV
CONCERNING THE NATURE OF THINGS
Copyright, 1925 By Harper & Brothers Printed in the U. S. A.