POPULAR WORKS BY DR. GEORGE HARTWIG.
Just published, with 8 full-page Engravings on Wood, from Original Designs by F. W. Keyl, and about 200 Woodcuts in the Text, in One Volume, 8vo. price 18s.
THE HARMONIES OF NATURE;
OR, THE UNITY OF CREATION.
BY DR. GEORGE HARTWIG.

‘Dr. Hartwig has produced another delightful and instructive volume, in which he illustrates the wonders of wisdom and knowledge with which creation teems. The opening chapters are devoted to a recapitulation of some of the magnificent and astonishing phænomena which are observed in the heavens, air, and sea, by way of developing the harmony which is the universal law of nature. But throughout the greater part of the work the Author confines himself to the domains of vegetable and animal life; and here he accumulates a surprising number of evidences of design, adaptation of power, and inexhaustible resource. The work exhibits a very unusual and most felicitous combination of accurate and varied erudition with clear and popular writing. It is a true instructor; for both the descriptions and the woodcuts with which they are accompanied are scientifically correct, while the narration is full of almost romantic interest. Each page has some new wonder to enchant the youthful reader and excite the reverent admiration of the thoughtful.... The reverence and piety of Dr. Hartwig’s works are a great recommendation in days when scientific men seem to think their first duty in speaking or writing is to avoid every word that could possibly suggest the idea of a personal Deity and intelligent Creator.’ Patriot.

Works by the same Author.

The TROPICAL WORLD: a Popular Scientific Account of the Natural History of the Animal and Vegetable Kingdom in the Equatorial Regions. With 8 Chromoxylographic Plates and numerous Woodcuts. 8vo. 21s.

The SEA and its LIVING WONDERS. With several hundred Woodcuts in the Text, and a Series of Chromoxylographic Plates from Original Designs by H. N. Humphreys. Third English Copyright Edition. 8vo. 18s.

‘This is the third edition, considerably enlarged, of the first and best of Dr. Hartwig’s beautiful and popular volumes on natural history. The size of the book is increased by a hundred pages; a good deal of it is remoulded; two whole new chapters have been added, one on Marine Caves, the other on Marine Constructions, such as Lighthouses and Breakwaters; some of the old illustrations have disappeared, but their place has been supplied by more and better; so that the new edition really amounts to a recasting of the entire book. It was a very good book before; it is better and more complete now. Whether we regard the letterpress or the numerous illustrations, it takes a rank second to none among ornamental and popular books of science.’ Guardian.

London: LONGMANS, GREEN, and CO. Paternoster Row.