30 APRIL 1921, Page 23

Map Reading. By G. H. C. Dale. (Macmillan. '75. 6d.

net.) —Mr. Dale's lucid little treatise is intended to teach soldiers and other people how to read a map and to use it in practice. Many thousands of men during the late war discovered for the first time the full uses of a map and the meaning and importance of contours, which, as at Hill 60 or Givenohy or many other

places, made all the difference in the world to our armies. Mr. Dale explains the subject patiently and clearly, and gives a large number of maps, diagrams, and examples.