lectures, [66];

controversies at Geological Society, [71];

aid of Darwin in discussions, [71];

his friendship with Darwin, [73], [104], [105];

his extreme caution, [75]-[77];

candour in finally accepting Natural Selection, [77];

opposition to his views, [83], [84];

his belief in Evolution at an early date, [81], [84]-[86];

his anticipation of 'Mimicry,' [85], [86];

his action in Darwin-Wallace episode, [113], [129];