Not all of us agreeing in equal measure with its conclusions, we are all at one in our estimate of the great intellectual powers it exhibits and of the immense effect it has produced in the history of thought; nor are we less impressed by the high moral qualities which have enabled you to concentrate those powers for so many years upon a purpose worthy of them, and, in spite of all obstacles, to carry out so vast a design. To the many who, like us, have learned to honor the man while profiting by his writings, it would be a satisfaction to possess an authentic personal likeness of the author. It has therefore occurred to us that the occasion might be appropriately marked by requesting you to permit us to employ some eminent artist to take your portrait, with a view, to its being deposited in one of our national collections for the benefit of ourselves and of those who come after us. We hope that your health may be benefited by the leisure which you have earned so well, and that you may long continue to enjoy the consciousness of having completed your work. W. DE W. ABNEY, R. E., C. B., D. C. L., F. R. S., Pres. Physical Society. ROBERT ADAMSON, M. A., LL. D., Prof, of Logic, Glasgow University. GRANT ALLEN, B. A. ALEXANDER BAIN, M. A., LL. D., Professor of Logic, Aberdeen University. SIR GEORGE S. BADEN-POWELL, K. C. M. G., M. A., M. P. RIGHT HON. ARTHUR JAMES BALFOUR, P. C., D. C. L., F. R. S., M. P. SIR ROBERT STAWELL BALL, LL. D., F. R. S., Lowndean Prof. Ast., Camb. H. CHARLTON BASTIAN, M. A., M. D., F. R. S., Prof. Medicine, Univ. Coll., London. FRANK E. BEDDARD, M. A., F. R. S., Prosector Zoölogical Society. JOHN BEDDOE, M. D., F. R. S. SIR WALTER BESANT, M. A. E. W. BRABROOK, Pres. Anthropological Institute. BERNARD BOSANQUET, M. A. C. V. BOYS, F. R. S., Assistant Prof. Physics R. C. S. T. LAUDER BRUNTON, M. D., D. Sc., F. R. S. EDWARD CLODD. F. HOWARD COLLINS. SIR J. CRICHTON-BROWNE, M. D., LL. D., F. R. S. W. H. DALLINGER, LL. D., D. Sc., F. R. S. FRANCIS DARWIN, M. A., M. B., F. R. S. GEORGE H. DARWIN, M. A., LL. D., F. R. S., Plumian Prof. Ast. and Exp. Physics, Cambridge. W. E. DARWIN, B. A. JAMES DONALDSON, M. A., LL. D., Principal University St. Andrews. RIGHT HON. SIR M. E. GRANT-DUFF, P. C., G. C. S. I., F. R. S. Earl of Dysart. SIR JOHN EVANS, K. C. B., D. C. L., LL. D., D. Sc., Treas. R. S. SIR JOSHUA FITCH, LL. D. MICHAEL FOSTER, M. A., M. D., LL. D., D. C. L., Sec. R. S., Prof. Physio., Cambridge. EDWARD FRANKLAND, M. D., D. C. L., LL. D., F. R. S. RIGHT HON. SIR EDWARD FRY, P. C., LL. D., D. C. L., F. R. S. SIR DOUGLAS GALTON, K. C. B., D. C. L., LL. D., F. R. S. FRANCIS GALTON, M. A., D. C. L., D. Sc., F. R. S. RICHARD GARNETT, LL. D.