Read 26th September, 1908. Manuscript received 5th December, 1908. Thanks to the great work of Professor Kendall in the Cleveland area, glacial geologists are now furnished with a key which will enable them to trace the history of the decline of the glaciers which debouched on to the plains of England during the Ice Age. Even in the area which he has made classic, work still remains to be done in deciphering the records of the various stages in the retreat of the ice from its position at maximum extension until it finally vanished from the district. The following notes, therefore, deal with the glacial phenomena produced during the retreat of the ice in North-west Cleveland, and embrace the Upleatham and Eston Outliers, the Guisborough Valley, and the Cleveland Plain of Stokesley. The phenomena to be discussed may be conveniently divided into three groups, corresponding chronologically to three positions of the ice margin, viz.:— 1. Phenomena at the period of maximum extension. 2. Phenomena at the foot of the Cleveland Hills during the retreat. 3. Phenomena connected with a halt of the ice on the Plain of Stokesley. The phenomena at the period of maximum extension have been fully elucidated by Professor Kendall, and are mentioned here so that what follows may be fully understood. There can be little question that he has conclusively established the existence in Cleveland, during the later phases of the Ice Age, of a large glacier that had passed over a part of the Cheviot ...