A hypothetical trip by air from Washington, D. C. to Chungking, gives us an instructive trip, involving the problems of air travel, the careful checking with meteorologists, the provisions made for changes in atmospheric conditions, the innoculations against diseases prevalent in foreign countries, and so on. From Washington to Natal, across Africa to India and China, through Siberia to Alaska, and home -- a short geography demonstration on route, and an introduction to modern cartography. Well-written with careful avoidance of the pitfalls of adult terminology. The Sperry illustrations are closely linked to the text (with one unfortunate omission of details mentioned therein) -- gay color, black and white; charts, diagrams and maps. Cloth.