months before the _Quarterly Review_ article appeared,
650 copies of the volume, out of the 1500 printed, had been sold, and he
anticipated the disposal of many more, when the review came out. This
expectation was realised and led to the issue of a second edition of the
first volume, of larger size and in better type.

Lyell, from the first, had seen that it would be impossible to avoid the
conclusion that the principles which he was advancing with respect to
the inorganic world must be equally applicable to the organic world. At
first he only designed to touch lightly on this subject, in the
concluding chapters of his first volume, and to devote the second volume
to the application of his principles to the interpretation of the
geological record. He, however, found it impossible to include the
chapters on changes in the organic world in the first volume and then
decided to make them the opening portion of the second volume.

It is evident, however, that as the work progressed, the interest of the
various questions bearing on the origin of species grew in his mind.
While Lyell found it impossible to accept the explanation of origin
suggested by Lamarck, he was greatly influenced by the arguments in
favour of evolution advanced by that naturalist; and as he wrote chapter
after chapter on the questions of the modification and variability of
species, on hybridity, on the modes of distribution of plants and
animals, and their consequent geographical relations, and discussed the
struggle of existence going on everywhere in the organic world, in its
bearings on the question of 'centres of creation,' he found the second
volume growing altogether beyond reasonable limits. His intense interest
in this part of his work is shown by his remark, 'If I have succeeded so
well with inanimate matter, surely I shall make a lively thing when I
have chiefly to talk of living beings[58]?'

By December 1831, Lyell had come to the resolution to publish the
chapters of his work which dealt with the changes going on in the
organic world as a volume by itself. This second volume of the
_Principles_ he gracefully dedicated to his friend Broderip, who had
rendered him such valuable assistance in all questions connected with
Natural History.

This volume appeared in January 1832, at the same time that a second
edition of the first volume was also issued. The reception of the second
volume by the public appears to have been not less favourable th