Ecology

Proceedings of the fourth National Conservation Congress at Indianapolis, October 1–4, 1912

The Andes and the Amazon; Or, Across the Continent of South America

Street Trees

The Twelve Months of the Year, with a Picture for each Month

Pere Marquette State Park

The Young Collector's Handbook of Ants, Bees, Dragon-flies, Earwigs, Crickets, and Flies

Speciation of the Wandering Shrew

Antarctic Penguins: A Study of Their Social Habits

The Book of the Fly

The Wonders of Life: A Popular Study of Biological Philosophy

The Story of the Hills: A Book About Mountains for General Readers

Hamewith

Forest Friends

The Mountain that was 'God

Notes on New Zealand

The music of the spheres : A nature lover's astronomy

Baraboo, Dells, and Devil's Lake Region

New Pacific Coast Cynipidæ (Hymenoptera)

Into the Frozen South

The English Lakes