THE NATURE 



OF THE 



PHYSICAL WORLD 



by 

 A. S. EDDINGTON 



M.A., LL.D., D.SC, F.R.S. 



Plumian Professor of Astronomy 



in the 



University of Cambridge 



THE 



GIFFORD LECTURES 



1927 



NEW YORK : 

 THE MACMILLAN COMPANY 



CAMBRIDGE, ENGLAND: 

 AT THE UNIVERSITY PRESS 



I929 



All rights reserved 



