On the whole, one does not see what Mr. Wallace could do,
other than what he has done--unless, of course, he changed his
title, or had been no longer Mr. Wallace.
Besides, thanks to the works of Mr. Spencer, Professor Mivart,
Professor Semper, and very many others, there has for some time been
a growing perception that the Darwinism of Charles Darwin was
doomed. Use and disuse must either do even more than is officially
recognised in Mr. Darwin's later concessions, or they must do a
great deal less. If they can do as much as Mr. Darwin himself said
they did, why should they not do more? Why stop where Mr. Darwin
did? And again, where in the name of all that is reasonable did he
really stop? He drew no line, and on what principle can we say that
so much is possible as effect of use and disuse, but so much more
impossible? If, as Mr. Darwin contended, disuse can so far reduce
an organ as to render it rudimentary, and in many cases get rid of
it altogether, why cannot use create as much as disuse can destroy,
provided it has anything, no matter how low in structure, to begin
with? Let us know where we stand. If it is admitted that use and
disuse can do a good deal, what does a good deal mean? And what is
the proportion between the shares attributable to use and disuse and
to natural selection respectively? If we cannot be told with
absolute precision, let us at any rate have something more definite
than the statement that natural selection is "the most important
means of modification.
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