I. The climate and physical aspects of the equatorial zone.--II. Equatorial vegetation.--III. Animal life in the tropical forests.--IV. Humming-birds: as illustrating the luxuriance of tropical nature.--V. The colours of animals and sexual selection.--VI. The colours of plants and the origin of the colour-sense.--VII. By-paths in the domain of biology.--VIII. The distribution of animals as indicating geographical changes
Evidence reported by paul nguyen for item tropicalnatureot00wall on May 9, 2007: no visible notice of copyright; stated date is 1878.