It has been my aim, in collecting and arranging the “Letters” from Dr. Gray’s large correspondence, to show, as far as possible in his own words, his life and his occupation. The greater part of the immense mass of letters he wrote was necessarily purely scientific, uninteresting except to the person addressed; so that many of those published are merely fragments, and very few are given completely. I have made no attempt to estimate his scientific or critical labors, for they are sufficiently before the world in various printed works; but something of the personality of the man and his many interests may be learned from these familiar letters and from even the slight notes. Dr. Gray began an Autobiography, but went no further than to give a brief sketch of his early life. This fragment is placed, with some notes illustrative of the early conditions in which his youth was passed, at the beginning of the work. It is owing to the kind assistance of many friends that the Autobiography and Letters are thus presented; among whom should be especially mentioned Professors C. S. Sargent and Charles L. Jackson, Dr. W. G. Farlow, Mr. J. H. Redfield, and Mr. Horace E. Scudder. J. L. GRAY. Botanic Garden, Cambridge, |