25 JUNE 1921, page 17

Books.

SOME DIFERENCES FROM THE EiNSTEM THEORY OF RELATIVITY.* LORD HALDANE has written a book which deals with a very much wider range of subject than are involved in those purely......

The Wages Of Labour.* Ma. Wnixor Graham., The Labour Member

for Central Edin- burgh, has produced a sane and helpful book on the wages question. Most Labour politicians who write on this subject are either ignorant of economics or......