“Professor Whitney,” he says, “is the first philologist of note who has professedly taken on himself to combat the views of Professor Max Müller; and as the opinions of the latter most properly command a vast deal of respect in England, we think it will be good service to direct the attention of English readers to this powerful attack, and, as we think, successful refutation of the somewhat dogmatic views of our Oxford linguist.” First of all, nothing would convey a more erroneous impression than to say that Professor Whitney was the first philologist of note who has combated my views. There is as much combat in the linguistic as in the physical camp, though Mr. Darwin may not be aware of it. Beginning with Professor Pott, I could give a long list of most illustrious scholars in Germany, France, Italy, and surely in England also, who have subjected my views on language to a far more searching criticism than Professor Whitney in America. But even if Professor Whitney were the only philologist who differed from me, or agreed with Mr. Darwin, how would that affect the soundness of Mr. Darwin’s theories on language? Suppose I were to quote in return the opinion of M. Renouvier, the distinguished author of “Les Principes de la Nature,” who, in his journal, “La Critique Philosophique,” expresses his conviction that my criticism of Mr. Darwin’s philosophy contains not a simple _polémique_, but has the character of a _rédressement_; would that dishearten Mr. Darwin? I must confess that I had never before read Professor Whitney’s “Lectures on Language,” which were published in America in 1867; and I ought to thank Mr. Darwin for having obliged me to do so now, for I have seldom perused a book with greater interest and pleasure,--I might almost say, amusement. It was like walking through old familiar places, like listening to music which one knows one has heard before somewhere, and, for that very reason, enjoys all the more. Not unfrequently I was met by the _ipsissima verba_ of my own lectures on the Science of Language, though immediately after they seemed to be changed into an inverted fugue. Often I saw how carefully the same books and pamphlets which I had waded through had been studied: and on almost every page there were the same doubts and difficulties, the same hopes and fears, the same hesitations and misgivings through which I myself well remembered having passed when preparing my two series of “Lectures on Language.” Of course, we must not expect in Professor Whitney’s Lectures, anything like a systematic or exhaustive treatment. They touch on points which were most likely to interest large audiences at Washington, and other towns in America. They were meant to be popular, and nothing would be more unfair than to blame an author for not giving what he did not mean to give. The only just complaint we have heard made about these Lectures is that they give sometimes too much of what is irreverently called