The perils of the desert are illustrated by the striking story of Rali, which forms one of the most vivid and entrancing chapters of the book. One of the nomad tribe of Tuaregs who lead a roving life amongst the few areas where pasturage of a kind is obtainable for their flocks, he was the victim of a dastardly raid in which his young and beautiful wife was carried off by a band of raiders. His adventures in seeking to recover her and avenge himself on her captors are told with a rare insight into the character of the natives and their mastery of their environment. Strange to say, although the vast majority of the natives are predatory and cruel, the author came across one community of religious pacifists who have never organised any defence against persistent raids. As might be expected, these unhappy creatures live in the direst poverty, for, if they should by hard work accumulate any food or other commodities, they are promptly relieved of them by rapacious bands who live largely on the spoliation of their neighbours. Naturalists will find ample evidence in the description of Saharan birds and mammals of the remarkable adaptation of the forms there existing to their arid environment. The appendices contain complete lists of the Saharan fauna. It was in my dual capacity of President of the Royal Scottish Geographical Society and of the Zoological Society of Scotland that I had the privilege of making the author’s acquaintance by presiding at the first lecture which he delivered in Scotland on the result of his travels in the Sahara. This book, which embodies them in greater detail, should have a wide circle of readers if the appeal which it made to myself is any index of popular interest. CONTENTS