CHAPTER 1.VI.--Geographical Distribution, 1843-1867.

ILLUSTRATIONS IN VOLUME I.

CHARLES AND CATHERINE DARWIN, 1816. From a coloured chalk drawing by Sharples, in possession of Miss Wedgwood, of Leith Hill Place.

MRS. DARWIN, 1881. From a photograph by Barraud.

EDWARD FORBES, 1844 (?). From a photograph by Hill & Adamson.

THOMAS HENRY HUXLEY, 1857. From a photograph by Maull & Fox. (Huxley's "Life," Volume I.)

PROFESSOR HENSLOW. From a photograph.

HUGH FALCONER, 1844. From a photograph by Hill & Adamson.

JOSEPH DALTON HOOKER, 1870 (?). From a photograph by Wallich.

ASA GRAY, 1867. From a photograph. ("Letters of Asa Gray," Volume I.)