Thus I invite Prof. Max Müller to state the grounds of his assertion in _The Monist_, that “all the facts of real language are against” me as an advocate of what he calls the biological theory of the developmental origin of man. This theory, he says, “derives no support whatever from the Science of Language.” I believe, on the other hand, that these are wholly unwarranted statements; and that the Science of Language does support the theory in question to as high a degree as is possible from the nature of the case. On account of this great difference of opinion, I felt, when writing my book, that I should be doing but scant justice to the matured judgment of so eminent a philologist if I did not carefully consider all that he had written upon the subject. And so, as I have said, I devoted more of my book to a consideration of his views than to those of any other philologist; and while accepting his scientific facts on his authority as a philologist, I nevertheless felt it incumbent on me to show why his philosophical deductions, where they had reference to the theory of descent, appeared to me by no means of equivalent value. This distinction, as I observed at the commencement of the present article, is surely a legitimate distinction; and I should be sorry indeed if anything that I have ever said can appear inconsistent with the genuine admiration which is due to Prof. Max Müller as “a student of language,” or with the no less genuine esteem which I have the best reason for knowing is due to him as a friend. GEORGE J. ROMANES. THE CONTINUITY OF EVOLUTION. THE SCIENCE OF LANGUAGE VERSUS THE SCIENCE OF LIFE, AS REPRESENTED BY PROF. F. MAX MÜLLER AND PROF. GEORGE JOHN ROMANES. All the sciences form, or at least ought to form, one great system, culminating in the science of sciences. Therefore it is more than doubtful how any science could exist without being somehow in contact with other sciences; and all of them must stand in some relation to philosophy. It is necessary that each science should develop in relative independence of the other sciences. We cannot expect to decide, for instance, chemical problems by physical or purely mechanical laws before we have carefully searched the nature and conditions of chemical processes. But as soon as this has been done we can expect that a comparison between the results of two or more sciences will throw new light upon the subject-matter on both sides. Solomon says: “To everything there is a season and a time to every purpose under the heaven.” Thus the sciences have to grow, each one on its own grounds, and when they have reached a certain state of maturity, they will coalesce with each other. And two sciences will by their coalescence fertilise the one the other so as to produce a new department which may by and by develop into a special science.