Let us now turn to the most authoritative exponent of latter-day evolution--I mean to Mr. Wallace, whose work, entitled Darwinism, though it should have been entitled Wallaceism, is still so far Darwinistic that it develops the teaching of Mr. Darwin in the direction given to it by Mr. Darwin himself--so far, indeed, as this can be ascertained at all--and not in that of Lamarck. Mr. Wallace tells us, on the first page of his preface, that he has no intention of dealing even in outline with the vast subject of evolution in general, and has only tried to give such an account of the theory of natural selection as may facilitate a clear conception of Darwin's work. How far he has succeeded is a point on which opinion will probably be divided. Those who find Mr. Darwin's works clear will also find no difficulty in understanding Mr. Wallace; those, on the other hand, who find Mr. Darwin puzzling are little likely to be less puzzled by Mr. Wallace. He continues:-- "The objections now made to Darwin's theory apply solely to the particular means by which the change of species has been brought about, not to the fact of that change." But "Darwin's theory"--as Mr. Wallace has elsewhere proved that he understands--has no reference "to the fact of that change"--that is to say, to the fact that species have been modified in course of descent from other species. This is no more Mr. Darwin's theory than it is the reader's or my own. Darwin's theory is concerned only with "the particular means by which the change of species has been brought about"; his contention being that this is mainly due to the natural survival of those individuals that have happened by some accident to be born most favourably adapted to their surroundings, or, in other words, through accumulation in the common course of nature of the more lucky variations that chance occasionally purveys. Mr. Wallace's words, then, in reality amount to this, that the objections now made to Darwin's theory apply solely to Darwin's theory, which is all very well as far as it goes, but might have been more easily apprehended if he had simply said, "There are several objections now made to Mr. Darwin's theory." It must be remembered that the passage quoted above occurs on the first page of a preface dated March, 1889, when the writer had completed his task, and was most fully conversant with his subject. Nevertheless, it seems indisputable either that he is still confusing evolution with Mr. Darwin's theory, or that he does not know when his sentences have point and when they have none.