IX 



LIST OF ILLUSTRATIONS. 



FIG. PAGE 



1. Nonionina and Gromia, ...... 13 



2. Wheel-animalcule, ....... 15 



3. Ciliated spores of Plants, Volvox globator, and Euplotes Charon, 21 



4. Amoeba, ........ 29 



5. Actinia mesembryanthemum, and diagrammatic section of the 



same, . . . . . . . .30 



6. Diagrammatic section of a Whelk, . . . .31 



7. Gregarine, Rhizopod, and Infusorian, . . . -35 



8. Hydra vulgaris, and diagrammatic section of the same, . 36 



9. Holothurian and larva, ...... 37 



10. Diagram of Annulose animal, ..... 38 



11. Section of a Cephalopod, . .... i 40 



12. Skeleton of the Common Perch, . . . . .41 



13. Fore-limb of Man, Fore-leg of Dog, and Wing of Bird, . . 45 



14. Fairy Shrimp, ....... 46 



15. Centipede, ........ 46 



16. Arm of Chimpanzee, ...... 47 



17. Leg of Chimpanzee, ...... 47 



1 8. Phy Ilium siccifolium, ...... ^3 



19. Yeast-plant, . . . . . .72 



20. Cells of notochord of Lamprey, . . . -73 



21. Ovum of Ascaris nigovenosa, ..... 75 



22. Germinating cells of Yeast-plant, ..... 76 



23. Metamorphoses of Butterfly, . . . . .90 



24. Young of water-breathing Gasteropod and adult Pteropod, . 95 



25. Young of Achtheres, and adult Lerncea, . . . .96 



26. Diagram of Foraminifera, . . . . .99 



27. Flustra hispida, ....... 100 



28. Param&cium multiplying by fission, .... iot 



