"Mr. Huxley has covered a vast variety of topics during the last quarter of a century. It gives one an agreeable surprise to look over the tables of contents and note the immense territory which he has explored. To read these books carefully and studiously is to become thoroughly acquainted with the most advanced thought on a large number of topics."--_New York Herald._
"The series will be a welcome one. There are few writings on the more abstruse problems of science better adapted to reading by the general public, and in this form the books will be well in the reach of the investigator.... The revisions are the last expected to be made by the author, and his introductions are none of earlier date than a few months ago [1893], so they may be considered his final and most authoritative utterances."--_Chicago Times._
"It was inevitable that his essays should be called for in a completed form, and they will be a source of delight and profit to all who read them. He has always commanded a hearing, and as a master of the literary style in writing scientific essays he is worthy of a place among the great English essayists of the day. This edition of his essays will be widely read, and gives his scientific work a permanent form."--_Boston Herald._
"A man whose brilliancy is so constant as that of Prof. Huxley will always command readers; and the utterances which are here collected are not the least in weight and luminous beauty of those with which the author has long delighted the reading world."--_Philadelphia Press._
"The connected arrangement of the essays which their reissue permits brings into fuller relief Mr. Huxley's masterly powers of exposition. Sweeping the subject-matter clear of all logomachies, he lets the light of common day fall upon it. He shows that the place of hypothesis in science, as the starting point of verification of the phenomena to be explained, is but an extension of the assumptions which underlie actions in everyday affairs; and that the method of scientific investigation is only the method which rules the ordinary business of life."--_London Chronicle._
_THE SYNTHETIC PHILOSOPHY OF HERBERT SPENCER_. In nine volumes. 12mo. Cloth, $2.00 per volume. The titles of the several volumes are as follows: