Thrilling adventure with a social import, about a trip down the Bareli River which flows in northern Assam from the Himalayas down to the Brahmaputra. The trip is made by an American Geology professor and a student, on commission from a prospective coal miner and involves some tense emotional situations as well as danger. Prof. Grove is harsh, studious. Apparently he distrusts the integrity of Roger, the student, who makes the trip from spite. They are accompanied by Kudra a Dufflas tribe boy, and their orders are sealed- to be opened when they reach the Bareli headwaters. When the papers are lost, quarrels and jungle hardships impede their journey back to civilization and finally there is the revealation of Kudra as the half loyal-half treacherous agent of his tribe who fear the white man's economic invasion. Grove and Roger are captured but persuade the Dufflas of the benefits they can bring and so are freed. Above average.