By Dr. G. Hartwig.
With Chromoxylographs, Maps, and Woodcuts. 8vo. 10s. 6d.
The Sea and its Living Wonders.
By Dr. G. Hartwig.
Fourth Edition, enlarged. 8vo. with many Illustrations, 10s. 6d.
The Tropical World.
By Dr. G. Hartwig.
With about 200 Illustrations. 8vo. 10s. 6d.
The Subterranean World.
By Dr. G. Hartwig.