vi eminent Scotsmen have gone to their rest, and accordingly, in the present issue of this Work, the Supplement has been enlarged by the incorporation of over twenty additional biographies. Among these will be found notices of Dr. CHAMBERS, the original editor of the Biographical Dictionary, Dr. CANDLISH, Dr. FAIRBAIRN, Sir W. FAIRBAIRN, Dr. GUTHRIE, Dr. LIVING- STONE, Sir CHARLES LYELL, Sir RODERICK MURCHISON, Sir J. Y. SIMPSON, and others. The biographies have been carefully compiled from the best available sources, some have been written and some revised by relatives of the deceased, and the materials for some others have been derived from personal and private information. There being no more interesting and instructive history than the lives of the men by whom history is made, there has been added to the work a full Chrono- logical Index of the memoirs of which it is composed, by means of which the reader is enabled to peruse them in the sequence of their dates, and thus convert this Dictionary into an admirable biographical history of Scotland, of its kind the most complete that has hitherto been published. In addition there is appended an Alphabetical Index, in which is registered the principal authorities and sources whence the materials of the biographies were derived. The BIOGRAPHICAL DICTIONARY OF EMINENT SCOTSMEN forms a com- prehensive record of the achievements of those, in every walk of life, whose memories are cherished by their countrymen, and whose deeds form the history of their country; of those who, by their energy, wisdom, or bravery, their patience, industry, learning, or writings, have been influential in preserving its freedom or maintaining the rights of its people; who have been the leaders in the progress of national civilization; and whose exertions have raised their country to that proud eminence which it now occupies among the nations of Europe. Among the biographies will be found a large number of an exceed- ingly instructive character, calculated to form incentive examples to young and ardent minds, and numerous instances of men who have risen from humble circumstances and attained to high positions, and of those who have succeeded in the pursuit of knowledge in spite of the greatest hardships and difficulties. GLASGOW, July, 1875.