Ecology

Street Trees

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

Afloat in the Forest; Or, A Voyage among the Tree-Tops

Carlsbad Caverns National Park, New Mexico

Speciation of the Wandering Shrew

Riverby

Bucolic Beatitudes

Peter Parley's Wonders of the Earth, Sea, and Sky

Glacier National Park

The Geography of New Jersey

The Book of Nature

Glaciers and Glaciation in Glacier National Park

Hope Farm Notes

Some Common Birds in Their Relation to Agriculture

The honey bee: a manual of instruction in apiculture

Burton Island State Park: Guide to the Interpretive Nature Trail and Hiking Trail

The apiary; or, Bees, bee-hives, and bee culture

The Italian Alp-bee

The new northland

An essay towards a natural history of serpents