xii LIST OF ILLUSTRATIONS 



PAGE 



29. Amoeba ......... 198 



30. Threads of Confervas 199 



31. Protococcus ......... 200 



32. Volvox 201 



33. Venus's Fly-trap 202 



34. Bracken-fern ........ 203 



35. Prothallus ......... 205 



36. Bean Plant ......... 207 



37. Diagram of Ovule . ... . . . 209 



38. Leaf of Bryophyllum 211 



39. Buttercup ......... 212 



40. Kadiolarian . . . '. . . . . , 214 



41. Infusorian . . . . . . . . 215 



42. Hydra . . . . . . . .* . . . 216 



43. Diagram of Lion's Eye . . ... . . 220 



44. Section of Spinal Cord . . . . . . . 226 



45. The Eight Whale 230 



46. The Rhinoceros Viper . . . . . . . 23 1 



47. Tadpoles 232, 233 



48. The Eft, Amblystoma . . ... . . 234 



49. Crayfish ......... 235 



50. The Snail 236 



51. The Cuttlefish . 237 



52. Ichthyosaurus 245 



53. Plant Mimicry ........ 249 



54. Logical Genus and Species . . . . . 288 



55. First Logical Figure 298 



56. Second Logical Figure ....... 298 



57. Third Logical Figure 299 



58. Fourth Logical Figure 299 



59. First and Second Moods of First Figure ... 300 



60. Third and Fourth Moods of First Figure . . . 300 



61. Fallacious Syllogism 301 



62. Dominions and Dependencies of Alexander . . .321 



63. Mediterranean Lands at Beginning of Second Punic War 342 



64. The Roman Empire under Trajan . . , . 349 



