ILLUSTRATIONS IN VOLUME I 



CHARLES AND CATHERINE DARWIN, 1816 . . . Frontispiece 



From a coloured chalk drawing by SHARPLES, in pos- 

 session of Miss Wedgwood, of Leith Hill Place. 



MRS- DARWIN, 1881 . . . . . . To face page 30 



From a photograph by BARRAUD. 



EDWARD FORBES, 1844 (?) ., ,,52 



From a photograph by HILL & ADAMSON. 



THOMAS HENRY HUXLEY, 1857 .... ,,73 



From a photograph by MAULL & Fox. 

 (Huxley's Life, Vol. I.) 



PROFESSOR HENSLOW . ... 188 



From a photograph. 



HUGH FALCONER, 1844 ,, 252 



From a photograph by HILL & ADAMSON. 



JOSEPH DALTON HOOKER, 1870 (?) . . ,,316 



From a photograph by WALLICH. 



ASA GRAY, 1867 455 



From a photograph. 



(Letters of Asa Gray, Vol. I.) 



XV 



