13 OCTOBER 1917, Page 21

The World's _4 it Routes and their Regulation. By Lord

Montagu of Beaulien. (Car Publishing Co. 61.)—Lord Montagu looks ahead and foresees that after the war flying will becomo an international question to be regulated like shipping, that air-routes over sea and land must be defined, and that the study of the prevailing winds will become more important than ever. He discuss., for example, in this interesting lecture the possibility of reserving different levels for different classes of eirtraffie, the slow Ina/shines taking the low road and the fast machines the high road, and the zone between eight and ton thousand feet being reserved for Government aeroplanes. Lord Montagu has boon justified already in his early enthusiasm for flying, and his suggestions for the future deserve serious attention.