James Geikie was connected with the Geological Survey for a period of twenty years, for he only gave up the work, with great reluctance, on his appointment to the Murchison Chair of Geology in the University of Edinburgh in the year 1881. It seems only fitting, therefore, that some general account of his life while a member of its staff should precede any detailed description of the occupations of the successive years. The Survey years were singularly happy ones, were perhaps the most fruitful in original work, and definitely determined the whole future course of his life. From the official standpoint the tale of events is soon told. In 1861 he was appointed Assistant Geologist. Six years later, when for the first time the Scottish Survey was organised as a branch separate from the English one, he was made one of the two geologists of the staff. Two years later, that is in 1869, he was promoted to be District Surveyor, which made him second in position after the Director, who was then his brother Archibald. The post of District Surveyor he held till 1881, when the posts of Director and the Professorship at Edinburgh became simultaneously vacant by the promotion of his brother. It was intimated that the two appointments would not again be combined, and, though as stated with great reluctance, James gave up the Survey to take the Chair. Of great interest in its effect upon his future work was a change in the policy of the Survey which practically synchronised with his appointment. Previous to this time, the loose superficial deposits in Scotland had been ignored by the surveyors, who confined themselves to mapping the solid geology, _i.e._, the actual rocks, which in many parts of Scotland are mantled by a thick covering of drift or peat. It was decided, chiefly on economic grounds, especially in connection with agriculture, that not only should these superficial deposits be in future mapped along with the solid geology, but that the areas already surveyed should be re-mapped, with the object of adding the omitted beds. As already stated, Dr Young and James Geikie joined the Survey in 1861, and Mr Peach at the beginning of 1862. All three soon after their appointment were entrusted with this work in Fife and the Lothians, which had already had their solid geology mapped. It was a kind of mapping which could be done with considerable rapidity, and therefore involved frequent changes of quarters. Thus, as Prof. Geikie says in the account already mentioned, which he contributed to the Memoir attached to Prof. Young’s _Essays and Addresses_, “in a year or so we [Young and himself] had tramped carefully over the major portion of Fife and the Lothians.”