Chapter III: Section X: Index 277

ILLUSTRATIONS.

FIG. PAGE

1. Diagram of a Cell. (_Drawn by Mr. E. P. Copeland from a
sketch by the Author._) 5

2. Stylonychia. (_Drawn by Mr. E. P. Copeland._) 9

3. Amœba. (_Drawn by Mr. E. P. Copeland._) 11

4. Rotalia. (_Drawn by Dr. A. L. Lawrence._) 12

5. Difflugia. (_Drawn by Dr. A. L. Lawrence._) 17

6. Noctiluca. (_Drawn by Dr. A. L. Lawrence._) 18

7. Gromia. (_Drawn by Dr. A. L. Lawrence._) 21

8. Diagram Illustrating Mitosis. (_Drawn by Mr. E. P. Copeland
from a sketch by the Author._) 26

9. Diagram Illustrating the Maturation and Fertilization of
the Ovum. (_Drawn by Mr. E. P. Copeland from a sketch
by the Author._) 30

10. Diagram Illustrating Segmentation and Gastrulation. (_Drawn
by Mr. E. P. Copeland from a sketch by the Author._) 34

11. Archæan North America. (_From a drawing in Shaler’s “First
Book in Geology.”_) 84

12. Cretaceous North America. (_From a drawing in Shaler’s
“First Book in Geology.”_) 86

13. Tertiary North America. (_From a drawing in Shaler’s “First
Book in Geology.”_) 89

14. Genesis of Horse’s Feet. (_Drawn by Mr. E. P. Copeland._) 112

15. Bipes, Cheirotes, and Snake. (_From a drawing in Shaler’s
“First Book in Geology.”_) 114

16. Domesticated Pig and Wild Boar. (_From Romanes’ “Darwin
and After Darwin.”_) 121

17. Tadpoles and Frog. (_Drawn by Dr. A. L. Lawrence._) 175

18. Diagram of Development. (_Drawn by Mr. B. H. Esterly from
a sketch by the Author._) 183

19. Brain of Fish. (_Drawn by Mr. B. H. Esterly from specimens
of the Author._) 198

20. Brain of Reptile. (_Drawn by Mr. B. H. Esterly from
specimens of the Author._) 199

21. Brain of a Marsupial. (_Drawn by Mr. B. H. Esterly from
specimens of the Author._) 200

22. Brain of a Lemur. (_Modified by Mr. B. H. Esterly from
Flower._) 201

23. Ideal Sections of Brains. (_Modified from Le Conte. Drawn
by Dr. A. L. Lawrence from a sketch by the Author._) 202

24. Brain of Human Fœtus—Fish Phase. (_Drawn by Mr. B. H.
Esterly from specimens of the Author._) 204

25. Brain of Human Fœtus—Reptile Phase. (_Drawn by Mr. B. H.
Esterly from specimens of the Author._) 204

26. Brain of Human Fœtus—Marsupial Phase. Side View. (_Drawn
by Mr. B. H. Esterly from specimens of the Author._) 204

27. Brain of Human Fœtus—Marsupial Phase. Dorsal View. (_Drawn
by Mr. B. H. Esterly from specimens of the Author._) 205

COLORED PLATES

PLATE FACING PAGE

I. Wild Rock Pigeon and Pouter. (_Drawn by Mr. J. L. Ridgway
from specimens in the Smithsonian Institution._) Frontispiece

II. Butterflies. (_Drawn by Miss L. Sullivan from specimens
in the United States Bureau of Entomology._) 138

III. Caterpillar of Geometer Moth. (_Drawn by Miss L. Sullivan
from specimens in the United States Bureau of Entomology._) 142

V. Spider on Flower. (_Drawn by Miss L. Sullivan from a plate
in McCook’s “American Spiders.”_) 144

VI. Elaps and Erythrolamprus. (_Modified by Mr. J. L. Ridgway
from a figure in Romanes’ “Darwin and After Darwin.”_) 146

VII. Salamandra maculosa. (_Drawn by Mr. J. L. Ridgway from
specimens in the United States National Museum._) 148

VIII. Paradise Birds. (_Drawn by Mr. J. L. Ridgway from specimens
in the Smithsonian Institution._) 152

IX. Primrose Flowers. (_Drawn by Miss L. Sullivan from
specimens._) 162

X. Bee Fertilizing Flower. (_Drawn by Miss L. Sullivan from
specimens in the United States Bureau of Entomology._) 164

PLATES ENGRAVED IN BLACK AND WHITE

IV. Leaf-hoppers. (_Drawn by Miss L. Sullivan from drawings
collected by Dr. L. O. Howard._) 140

XI. Babies’ Grasping Power. (_From a Photograph taken by Dr.
Louis Robinson._) 192

XII. Brain of Man. (_From Carus’ “The Soul of Man.”_) 202