This new edition has been entirely reset and thoroughly revised, the recent changes in classification introduced, and the book in all respects brought up to date. Treat's Home Studies in Nature By Mrs. MARY TREAT. Cloth, 12mo, 244 pages 90 cents An interesting and instructive addition to the works on Natural History. _Copies of any of the above books will be sent prepaid to any address, on receipt of the price, by the Publishers:_ American Book Company NEW YORK . CINCINNATI . CHICAGO * * * * * Text-Books in Geology Dana's Geological Story Briefly Told By JAMES D. DANA. Cloth, 12mo, 302 pages $1.15 A new edition of this popular work for beginners in the study and for the general reader. The book has been entirely rewritten, and improved by the addition of many new illustrations and interesting descriptions of the latest phases and discoveries of the science. In contents and dress it is an attractive volume either for the reader or student. Dana's Revised Text-Book of Geology Edited by WILLIAM NORTH RICE, Ph.D., LL.D., Professor of Geology, Wesleyan University. Cloth, 12mo, 482 pages. $1.40 This is the standard text-book for high school and elementary college work. The book has been thoroughly revised, enlarged, and improved, while the general and distinctive features of the former work have been preserved. As now published, it combines the results of the life experience and observation of its distinguished author with the latest discoveries and researches in the science. Dana's Manual of Geology By JAMES D. DANA. Cloth, 8vo, 1087 pages. 1575 illustrations $5.00 This great work was thoroughly revised and entirely rewritten under the direct supervision of its author, just before his death. It is recognized as a standard authority, and is used as a manual of instruction in all higher institutions of learning. Le Conte's Compend of Geology By JOSEPH LE CONTE, LL.D. Cloth, 12mo, 399 pages $1.20 Designed for high schools, academies, and all secondary schools. Steele's Fourteen Weeks in Geology By J. DORMAN STEELE, Ph.D. Cloth, 12mo, 280 pages $1.00 A popular book for elementary classes and the general reader. Andrews's Elementary Geology By E.B. ANDREWS, LL.D. Cloth, 12mo, 283 pages $1.00 Adapted for elementary classes. Contains a special treatment of the geology of the Mississippi Valley. _Copies of any of the above books will be sent, prepaid, to any address on receipt of the price by the Publishers:_ American Book Company NEW YORK . CINCINNATI . CHICAGO * * * * * A New Astronomy BY DAVID P. TODD, M.A., Ph.D. Professor of Astronomy and Director of the Observatory, Amherst College. Cloth, 12mo, 480 pages. Illustrated Price, $1.30