CHECK-LIST OF NORTH AMERICAN BATRACHIA AND REPTILIA; WITH A SYSTEMATIC LIST OF THE HIGHER GROUPS, AND AN ESSAY ON GEOGRAPHICAL DISTRIBUTION. BASED ON THE SPECIMENS CONTAINED IN THE U. S. NATIONAL MUSEUM

ON THE BATRACHIA AND REPTILIA OF COSTA RICA

ON THE FISHES OF THE AMBYIACU RIVER

ON THE FLAT-CLAWED CARNIVORA OF THE EOCENE OF WYOMING

ON THE STRUCTURES AND DISTRIBUTION OF THE GENERA OF THE ARCIFEROUS ANURA

OUR OWN BIRDS

OUR OWN BIRDS; A FAMILIAR NATURAL HISTORY OF THE BIRDS OF THE UNITED STATES

OUR OWN BIRDS; A FAMILIAR NATURAL HISTORY OF THE BIRDS OF THE UNITED STATES (HB)

OUR OWN BIRDS; A FAMILIAR NATURAL HISTORY OF THE BIRDS OF THE UNITED STATES (HB)

RESEARCHES UPON THE ANTIQUITY OF MAN IN THE DELAWARE VALLEY AND THE EASTERN UNITED STATES

SYLLABUS OF LECTURES ON THE VERTEBRATA

THE BATRACHIA AND REPTILIA OF COSTA RICA

THE ORIGIN OF THE FITTEST

THE ORIGIN OF THE FITTEST; ESSAYS ON EVOLUTION

THE PRIMARY FACTORS OF ORGANIC EVOLUTION

THE PRIMARY FACTORS OF ORGANIC EVOLUTION

THE PRIMARY FACTORS OF ORGANIC EVOLUTION

THEOLOGY OF EVOLUTION

TREES, PLANTS AND FLOWERS WHERE AND HOW THEY GROW

TREES, PLANTS, AND FLOWERS

TREES, PLANTS, AND FLOWERS

TREES, PLANTS, AND FLOWERS

TREES, PLANTS, AND FLOWERS

TREES, PLANTS, AND FLOWERS (HB)

TREES, PLANTS, AND FLOWERS (PB)

TREES, PLANTS, AND FLOWERS, WHERE AND HOW THEY GROW. A FAMILIAR HISTORY OF THE VEGETABLE KINGDOM

TREES, PLANTS, AND FLOWERS, WHERE AND HOW THEY GROW. A FAMILIAR HISTORY OF THE VEGETABLE KINGDOM (HB)

TREES, PLANTS, AND FLOWERS, WHERE AND HOW THEY GROW. A FAMILIAR HISTORY OF THE VEGETABLE KINGDOM (HB)

TREES, PLANTS, AND FLOWERS; WHERE AND HOW THEY GROW

TREES, PLANTS, AND FLOWERS; WHERE AND HOW THEY GROW A FAMILIAR HISTORY OF THE VEGETABLE KINGDOM