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The Arcturus adventure : An account of the New York Zoological Society's first oceanographic expedition

Galapagos world's end

The West Indies. A history of the islands of the West Indian archipelago, together with an account of their physical characteristics, natural resources, and present condition

Field book of the american wild flowers

The musci and hepaticae of the United States east of the Mississippi River. Contributed to the second edition Gray's Manual of botany.

Florae Americae Boreali-Orientalis (Genera) illustrata : The Genera of plants of the United States illustrated by figures and analyses from nature by Isaac Sprague, superintended and with Descriptions by Asa Gray

Illustrations of surface geology