Ecology

Why Birds Matter

The Chemical Age

In the Mountains Green

Summer

The Lobster Fishery of Maine

The Mountains of California (With Original Drawings & Photographs)

Hemp

The Good Bee

The Mountains of California (Illustrated Edition)

The Periodical Cicada, “the 17-year Locust”

Lichens

A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope

The Cocoanut: With reference to its products and cultivation in the Philippines

Comments on the Taxonomy

Atoms, Nature, and Man: Man-made Radioactivity in the Environment

Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado

Man's Place in the Universe A Study of the Results of Scientific Research in Relation to the Unity or Plurality of Worlds, 3rd Edition

Journal of a Horticultural Tour

Nuova; or, The New Bee

Snakes