“Professor Hobbs furnishes valuable observations made of recent earthquakes. The book is scholarly and well written; a good book that even the casual reader can peruse with pleasure.”—New York World.
D. APPLETON AND COMPANY, NEW YORK.
BOOKS BY PROFESSOR GROOS.
The Play of Man.
By Karl Groos, Professor of Philosophy in the University of Basel. Translated, with the author’s coöperation, by Elizabeth L. Baldwin, and edited, with a Preface and Appendix, by Prof. J. Mark Baldwin, of Princeton University, 12mo. Cloth, $1.50 net; postage, 12 cents additional.
“A book for parents to read and ponder over with care and mental diligence.”—Chicago Tribune.
“Not alone does the work make an appeal to the strictly scientific. The general reader will find in it absorbingly interesting facts, presented in a way which may prove of practical use.”—Boston Advertiser.
“A very valuable book. The results of Professor Groos’s original and acute investigations will be especially appreciated by those who are interested in psychology and sociology, and they are of great importance to educators.”—Brooklyn Standard Union.
The Play of Animals.
By Karl Groos. Translated, with the author’s coöperation, by Elizabeth L. Baldwin, and edited, with a Preface and Appendix, by Prof. J. Mark Baldwin, of Princeton University, 12mo. Cloth, $1.75.