As a geologist he had limitations which he clearly recognised. Palæontology, petrology, and mineralogy he had a sound working knowledge of, but he never professed to know them thoroughly, and much of the teaching of these subjects he left to specially trained assistants. Had he been better equipped in these respects, he might have avoided some of the pitfalls into which he stumbled at times. But in physical and structural geology he took a very high place among living scientists. The thorough training and natural aptitude for structural and field geology made him a very shrewd judge of controversial questions in tectonics, and laid a secure foundation for his researches in geographical evolution and the origin of the earth’s surface features. As a geographer, interested especially in the larger problems of geographical configuration, he earned a world-wide reputation. His special field of work, however, was the history of the glacial period in all its aspects, and as time went on he came to be recognised as the most thorough-going advocate of repeated glacial and interglacial epochs. The positions he took up at a very early stage in his scientific career he maintained with little modification till its close, and in spite of indifference and in the face of severe criticism he saw his theories more and more completely established year by year. The subject is one of the most controversial in geological science at the present day. Very eminent authorities may be found who deny the validity of nearly every one of Prof. Geikie’s conclusions about interglacial epochs, but there is a large and increasing body of supporters of his views, though even now the extreme position he took up in subdividing the Ice Age into six glacial periods cannot be said to be generally accepted. But if we compare the text-books of the present day with those published twenty years ago, we can realise how great an advance has been made in the direction in which he led; and there can be no doubt that in the long-run his consistency, courage, and sagacity will receive full recognition. The old Scottish school of geology which had numbered so many famous men among its members found in James Geikie one of its most distinguished representatives. In science, as in all things, he was pre-eminently a Scotsman. Ramsay and Croll, two of the most philosophic geologists of their time, were the men to whom he owed the inspiration which originally directed him, and he was a true disciple of Playfair, whose memory he reverenced. In all his writings he places in the foreground the observations which he and his fellow-workers in Scotland had made in the field, and the inferences drawn from them; and it was in no small measure to James Geikie that the high position which the work of Scottish geologists holds in the estimation of scientific men is to be ascribed. LIST OF PUBLICATIONS