Ecosystems & Habitats

The Heart that Knows

The Flower-Fields of Alpine Switzerland: An Appreciation and a Plea

The Ocean World: Being a Description of the Sea and Its Living Inhabitants

Jelly-Fish, Star-Fish, and Sea-Urchins: Being a Research on Primitive Nervous Systems

Forest, Rock, and Stream

The Handbook to the Rivers and Broads of Norfolk & Suffolk

The Land of the Long Night

Submerged forests

Over the Rocky Mountains to Alaska

The Challenge of the North

By the Marshes of Minas

The Flaming Forest

Under the Trees and Elsewhere

Polar Exploration

Natural History: Mollusca

Stars of the Desert

Devils Tower National Monument

Masters of the Wilderness

Tales of a Vanishing River

Days in the Open