[ iii ] 
CONTENTS, 
(A) 
VOL. 219. 
List of Illustrations . . .page v 
Advertisement. vii 
The Magnetic Re-survey of the British Isles for the Epoch January 1, 1915. 
By George W. Walker, A.R.C.Sc., M.A., F.R.S., formerly Fellow of 
Trinity College, Cambridge .... . p(^g^ 1 
Appendix. 
A Report on Magnetic Disturbances m Northamptonshire and Leicestershire 
and their Relations to the Geological Structure. By Arthur Hubert Cox, 
M.Sc., Ph.D., F. G.S. [Drawn up at the Request of the Iron-Ore Committee 
of the Conjoint Board of Scientific Societies) .73 
