utilised the results of the work of his old colleagues of the Scottish Survey on the North-west Highlands, where they had gleaned new data of the highest value, and the book was illustrated with many beautiful photographs of Scottish and Alpine mountains. Throughout the book the influence of Prof. Suess is often noticeable. The compilation of this book was a thoroughly congenial task to Prof. Geikie. He was content for a time to let glacial controversies rest, and to concentrate his attention on problems of geographical evolution. In bringing to a close this short review of Prof. Geikie’s scientific work, we may be permitted to point out what seems to be the main characteristics of his investigation and teaching. Had he been questioned himself on this point, there can be no doubt he would have given his University courses of instruction a high place in his services to science. He never allowed himself to regard it as routine work, to be hurried through without enthusiasm. He gave his best to his students, and constantly improved his lectures, excursions, and practical classes, so as to make them as modern and as complete as circumstances would allow. Hampered by very inadequate accommodation and equipment, he gave freely of his time and money to compensate for these disadvantages. The ordinary student he strove to interest and to instruct, and as year by year his classes increased, he had good evidence to convince him that both his subject and his method of expounding it were receiving their full share of attention among the students of the University. But he had a keen eye for merit, and young men who evinced a desire to pursue the path of original research were quickly recognised and encouraged in every way to follow the right lines. Thus, although geology was for a long time a very small class, it produced almost every year one or more men who subsequently made a name for themselves in science. All over the world, and especially in the British colonies, there are many well-known geologists who can trace the impetus which decided their careers to the lectures delivered by the genial professor in the dingy old Edinburgh class-room at the top of those interminable stairs.