As the Gorge District of the Yangtze is one of the few areas in China that can deservedly boast before the world its scenic grandeur as well as beauty, it has been long felt that a systematic account of its geological conditions would open another aspect of interest to the scientific travellers. There are already on the record the observations of Pumpelly, Richthofen, Abendanon, Willis and Blackwelder, Noda and others; but the results of their work, important as they are in certain respects, seem to indicate, as a whole, little more than the broad fact that here we have a mighty sequence of rocks folded into a series of anticlines with a rather extensive exposure of a “granitic” core in the easternmost fold—the so-called Hwanglin Anticline. This anticline extends transversly from the town of Ichang to that of Tzekuei, and covers a little less than half of the distance between the first and the last points of the gorges. As the Gorge District of the Yangtze is one of the few areas in China that can deservedly boast before the world its scenic grandeur as well as beauty, it has been long felt that a systematic account of its geological conditions would open another aspect of interest to the scientific travelers. There are already on the record the observations of Pumpelly, Richthofen, Abendanon, Willis and Blackwelder, Noda and others; but the results of their work, important as they are in certain respects, seem to indicate, as a whole, little more than the broad fact that here we have a mighty sequence of rocks folded into a series of anticlines with a rather extensive exposure of a “granitic ” core in the easternmost fold-the so-called Hwanglin Anticline. This anticline extends transversly from the town of Ichang to that of Tzekuei, and covers a little less than half of the distance between the first and the last points of the gorges.