MENTAL EVOLUTION IN ANIMALS. By George J. Romanes, author of "Animal Intelligence." With a Posthumous Essay on Instinct, by Charles Darwin. 12mo, cloth, $2.00.

"The author confines himself to the psychology of the subject. Not only are his own views Darwinian, but he has incorporated in his work considerable citations from Darwin's unpublished manuscripts, and he has appended a Posthumous Essay on Instinct by Mr. Darwin."—Boston Journal.

"A curious but richly suggestive volume."—New York Herald.

PRACTICAL ESSAYS. By Alexander Bain, LL. D., author of "Mind and Body," "Education as a Science," etc. 12mo, cloth, $1.50.

"The present volume is in part a reprint of articles contributed to reviews. The principal bond of union among them is their practical character.... That there is a certain amount of novelty in the various suggestions here embodied will be admitted on the most cursory perusal."—From the Preface.

THE ESSENTIALS OF ANATOMY, PHYSIOLOGY, AND HYGIENE. By Roger S. Tracy, M. D., Health Inspector of the New York Board of Health; author of "Hand-Book of Sanitary Information for Householders," etc. (Forming a volume of Appletons' Science Text-Books.) 12mo, cloth, $1.25.

"Dr. Tracy states in his preface that his aim has been 'to compress within the narrowest space such a clear and intelligible account of the structures, activities, and care of the human system as is essential for the purposes of general education.' And he has so far succeeded as to make his manual one of the most popularly interesting and useful text-books of its kind.... The book is excellently arranged, the illustrations are admirable."—Boston Daily Advertiser.

HISTORY OF THE WORLD, from the Earliest Records to the Fall of the Western Empire. By Philip Smith, B. A. New edition. 3 vols. 8vo. Vellum cloth, gilt top, $6.00; half calf, $13.50.

"These volumes embody the results of many years of arduous and conscientious study. The work is fully entitled to be called the ablest and most satisfactory book on the subject written in our language. The author's methods are dignified and judicious, and he has availed himself of all the recent light thrown by philological research on the annals of the East."—Dr. C. K. Adams's Manual of Historical Literature.

HISTORY OF HERODOTUS. An English Version, edited, with Copious Notes and Appendices, by George Rawlinson, M. A. With Maps and Illustrations. In four volumes, 8vo. Vellum cloth, $8.00; half calf, $18.00.