[OUR EARTH: ITS STRUCTURE AND SURFACE]—[GEOLOGICAL VIEW OF THE GROWTH OF THE EARTH]—[LAND FORMS OF THE WORLD]—[DISTRIBUTION OF LAND AND WATER]—[THE CONTINENTS]—[ISLANDS]—[MOUNTAINS]—[WATERS OF THE EARTH]—[FORMS OF WATER]—[RIVERS]—[WATERFALLS AND RAPIDS]—[LAKES]—[OCEANS]—[VOLCANOES]—[GEYSERS]—[ATMOSPHERE, CLIMATE, AND WEATHER]—[WINDS]—[CLOUDS]—[ATMOSPHERIC VAPOR], ([Dew], [Mist], [Fog], [Rain], [Hail], [Snow])—[GLACIERS]—[ICEBERGS]—[DESERTS]—NATURAL FORCES—[MINERAL PRODUCTS]—[PRONOUNCING DICTIONARY OF SCIENTIFIC TERMS]—MAPS AND CHARTS.

⁂Books of Reference about the Earth.—Dawson: Story of the Earth. Lyell: Principles of Geology. Geikie: Primer of Geology. Shaler: Sea and Land. Scott: Geology. Geikie: Text-Book of Geology. Chamberlin and Salisbury: Geology. Le Conte: Elements of Geology. Dana: Manual of Geology. Miers: Mineralogy. Dana: Text-Book of Mineralogy and System of Mineralogy (most comprehensive work in English). Brush and Penfield: Determinative Mineralogy. Rosenbusch-Iddings: Rock-Making Minerals. Hatch: Petrology. Butler: Pocket Handbook of Minerals. Mill: Realm of Nature. W. M. Davis: Physical Geography. Tarr: Physical Geography.

[BOOK OF THE VEGETABLE KINGDOM]

[REALMS OF LIFE UPON THE EARTH]—[CHIEF DIVISIONS OF THE PLANT KINGDOM]: (1) [Cereals, Grasses and Forage Plants]; (2) [Kitchen Vegetables]; (3) [The Fruit Trees]; (4) [Fruit-bearing Shrubs and Plants]; (5) [Flowers and Other Ornamental Plants]; (6) [Wild Flowers and Flowerless Plants]; (7) [Trees of the Forest]; (8) [Fiber and Commercial Plants]; (9) [Poisonous Plants]; (10) [Some Wonders of Plant Life]—[BOTANICAL CLASSIFICATION OF PLANTS]—[SCIENTIFIC TERMS USED IN BOTANY, CLASSIFIED AND ILLUSTRATED]—[MAP OF THE PLANT KINGDOM].

⁂Books of Reference about the Vegetable Kingdom.—Gray: New Manual of Botany. Bessey: Synopsis of Plant Phyla. Small: Flora of the Southeastern United States. Coulter and Nelson: New Manual of the Botany of the Central Rocky Mountains. Gray: Synoptical Flora of North America. Britton: Manual of the Flora of the Northern States and Canada. Strasburger, Noll, Schenck and Karsten: Textbook of Botany. Pfeffer: Physiology of Plants. Ward: Disease in Plants. Schimper: Plant Geography. Campbell: Evolution of Plants. Green: Landmarks of Botanical History. Sach: History of Botany, 1530-1860. Green: History of Botany, 1860-1900. Baker: Elementary Lessons in Botanical Geography.

[BOOK OF THE ANIMAL KINGDOM]

[SCIENTIFIC CLASSIFICATION OF ANIMALS]—[TABULAR VIEW OF REPRESENTATIVE ANIMAL TYPES]—[ANIMALS IN CLASSIFIED GROUPS]:

I. [Wild Animals]:
  1. [THE MAMMALS]: (a) [The Monkey Tribe]; (b) [Animals of Prey]; (c) [Gnawing Animals]; (d) [Hoofed Animals]; (e) [Toothless Animals]; (f) [Thick-Skinned Animals]; (g) [Pouched Animals]; (h) [Flying Animals]; (i) [The Seals]; (j) [The Whales].
  2. [THE BIRDS]: (a) [Birds of Prey]; (b) [Climbing Birds]; (c) [Singing Birds]; (d) [Wading Birds]; (e) [Swimming Birds]; (f) [Running Birds]; (g) [Game Birds].
  3. [THE REPTILES]: [Lizards]—[Chameleons]—[Snakes]—[Crocodiles]—[Tortoises]— [Turtles].
  4. [AMPHIBIANS]: [Frogs]—[Toads]—[Salamanders].
  5. [THE FISHES]: (a) [Bony Fishes]; (b) [Cartilaginous Fishes]; (c) [Armored Fishes]; (d) [Lungfishes].
  6. [THE MOLLUSCS]: [Snails]—[Cuttlefish]—[Squids]—[Octopus]—[Tusk Shells]—[Bivalves]—[Oysters].
  7. [JOINTED-LIMBED ANIMALS]: [Crabs]—[Lobsters]—[Scorpions]—[Spiders]—[Insects]—[Grasshoppers].
  8. [BUTTERFLIES AND MOTHS]: [Straight-Winged Insects]—[Ants and Bees]—[Flies].
  9. [STARFISHES AND SEA-URCHINS].
  10. [SIMPLEST FORMS OF LIFE].
II. [Domesticated Animals]: