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Scientific illustrations and symbols : moral truths mirrored in scientific facts
Essays, speculative and suggestive
Journal of a visit to South Africa, in 1815, and 1816 : with some account of the missionary settlements of the United Brethren, near the Cape of Good…
The feathered tribes of the British Islands
Leisure-time studies, chiefly biological. A series of essays and lectures
Diseases of crop-plants in the Lesser Antilles
Rocky Mountain life; or, Startling scenes and perilous adventures in the far West
The dog
The correlation and conservation of forces: a series of expositions