The reader interested in some of the problems may wish to consult J. Fairgrieve's _Geography and World-Power_, H. J. Mackinder's _Democratic Ideals and Reality_, H. J. Fleure's _Human Geography in Western Europe_, and C. B. Fawcett's _Frontiers_. The standard journals have issued important articles by Hinks, Lyde, Newbigin, and others on the rearranged boundaries of European states, and among books concerned with the new Europe one may mention J. M. Keynes, _Economic Consequences of the Peace_; I. Bowman, _The New World_; M. I. Newbigin, _Aftermath_; and H. J. Fleure, _The Treaty Settlement in Europe_. The new _Times Atlas_ is invaluable, and may be supplemented on the historical side by use of the well-known historical atlases of F. Schrader, Poole, Ramsay Muir, Diercke, and others. Several valuable maps occur only in Vidal de la Blache, _Atlas général_. PRINTED IN ENGLAND AT THE OXFORD UNIVERSITY PRESS [Illustration: Rear end paper]