Andre Citroen, manufacturer of the Citroen cars, financed an extraordinary journey across Asia, virtually the first attempt (1931-1932) to cross the continent on motor vehicles equipped with caterpillar tracks, and the only endeavor made to penetrate the Himalayas. The trip started from Beirut, extended to Pekin and back, passing through Saigon, Siam, Burma, British India and Persia. Scientists of different sorts went along to contribute what they could to the findings; photographers were an essential adjunct. It took three years to complete the preparations. And yet at every turn, unexpected contingencies, eccentricities on the part of the natives and their leaders, changed the plans, altered details. Adventures aplenty, colorful and dramatic; virtual imprisonment; struggle, triumph. Not an analysis of the sociological or economic or political problems of the sections of Asia they traversed, but interesting reading for the hammock explorer. Not the conventional modern popular or debunking travel book -- nor so personal as many of recent publications, but excellent of its type.