5 DECEMBER 1925, Page 44

BY AIRPLANE TOWARDS THE NORTH POLE. By Walter Mittelholzer and

others. (Allen and Unwin. 10s. 6d. net.) THE value of aerial photography for the purpose of map- 'making, is described lucidly by experts in this account, trans- lated from the German by Eden and Cedar Paul, of an expedi. 'ion over Spitsbergen. Lieutenant Mittelholzer, of the Swiss Air Force, and others set out in a Junkers all-metal airplane to meet Amunsden in his flight from North America, but, on the latter's change of plan, devoted their journey to photographic -researches. By photographs and description, the glaciers and icy ranges of the desolate northern land, the Nifelheim of ;Scandinavian mythology, are brought vividly to our mind.