A large amount of material was also kindly supplied by geologists and others in this country. Among those who have taken a keen interest in the progress of the work, and have rendered notable assistance, mention may be made of the following friends and correspondents of Prof. Geikie:--Dr John Horne, who supplied many letters and much detailed information--to his kindly and unfailing help this memoir of his old friend owes much; Dr Peach, whose accounts of early days on the Survey were most helpful; Mr Lionel Hinxman, Mr H. M. Cadell, and many others, to whom application was made in regard to matters of detail. Among the last mention may be made of Dr W. B. Blaikie of Messrs T. & A. Constable, Mr T. S. Muir of the Royal High School, and Mr John Grossart. To all who have rendered assistance I desire to offer most cordial thanks, and trust that they and others will feel that the biographical sketch, in however imperfect a fashion, does present a lifelike picture of one who rarely failed to inspire affection and admiration in those who came to close quarters with him. MARION I. NEWBIGIN. EDINBURGH, _October 1917_. CONTENTS PART I.--LIFE AND LETTERS BY MARION I. NEWBIGIN CHAP. PAGE I. BOYHOOD AND YOUTH, 1839-61 3 II. FIRST YEARS ON THE GEOLOGICAL SURVEY, 1862-64 19 III. “THE GREAT ICE AGE”: (1) YEARS OF PREPARATION, 1865-71 34 IV. “THE GREAT ICE AGE”: (2) PUBLICATION, 1872-74 52 V. MARRIAGE AND LIFE AT PERTH, 1875-77 62 VI. LAST YEARS ON THE SURVEY, 1878-82 82 VII. EDINBURGH AND THE PROFESSORSHIP, 1882-88 100 VIII. FINAL EDITION OF “THE GREAT ICE AGE,” 1889-1903 116 IX. RETIREMENT FROM THE PROFESSORSHIP AND LAST DAYS, 1904-15 130 PART II.--GEOLOGICAL WORK BY J. S. FLETT X. THE GLACIAL PROBLEM BEFORE JAMES GEIKIE 149 XI. “THE GREAT ICE AGE” AND “PREHISTORIC EUROPE” 164 XII. EDUCATIONAL AND ADMINISTRATIVE WORK 180 XIII. INTERGLACIAL CONTROVERSIES 194 LIST OF PUBLICATIONS 213 INDEX 221 LIST OF ILLUSTRATIONS PROF. GEIKIE IN HIS LATER YEARS. (Photograph by Mr John Horsburgh) _Frontispiece_ A STUDY OF PROF. GEIKIE IN 1884. (From Mr William Hole’s Etching in _Quasi Cursores_, published for the Edinburgh University Tercentenary Celebrations) _to face p. 104_ PROF. GEIKIE IN 1888. (From a Photograph taken in Philadelphia) _to face p. 108_