This little book is, on the whole, the best popular geology that has ever come from the press. The subject is one that possesses the strongest possible interest for the writer and awakens his greatest enthusiasm. One of the strongest and most interesting chapters in the volume is the first of the two on primitive man. The whole book is remarkable for its simplicity, clearness, interest, and vitality.—Mail and Express, N. Y.

The work is full of absorbing interest.—Toledo Blade.

The book is a recognized authority on the subject of which it treats, and worthy of a place in the library.—S. S. Journal, N. Y.

We advise any of our readers who have been carried away with the evolution craze as something that indicates advanced thinking to read this most valuable work.—Christian Standard, Cincinnati, O.

An excellent summary of geological history.—Boston Literary World.

The author is an able opponent of the theories of the evolutionists, and his discussion of the theme is interesting. His account of the lowest and earliest form of animal life as exemplified in what he calls the "dawn animal," found by him in fossil state in Canada, is of special interest.—Brooklyn Eagle.

The last two chapters of the work on "Primitive Man" contain an unanswerable argument against the Darwinian theory of evolution, and will be found invaluable by all who are called to face that phase of modern infidelity. We most earnestly commend the volume.—Chicago Interior.

This work has stood the test of criticism, and has won its way to the position of a standard text-book. The learned author does not accept theories for scientific facts, nor permit himself to be led away by mere clamor. He goes to the bottom of things, and gets at the truth if possible. He does not presume to build a scientific system upon finely wrought suppositions. What is known of the history of the earth and man the student will find in this book. It comes up to date with its facts. We do not know its equal as a text-book on this subject. It is sufficiently illustrated, and beautifully printed, and has a copious index.—San Francisco Christian Advocate.

We cannot but give the greatest respect to the writer of this book, who presents so vividly the history of the world's progress, and we cannot but express admiration for that clear and precise style he possesses.—N. Y. Times.

Published by HARPER & BROTHERS, N. Y.