Cuttlefish, shell of, 237. Cycads, 60. Cyclicism, 336, 351. of the globe, 354. of inorganic nature, 355. of celestial orbs, 359. Cysticercus, 196. Daphnia, economy of, 325. Dauber, economy of, 320. Days of creation, 15. Deductions, fallible, 2. Deer, Irish, 84. Deltas, 85. Deposits, earthy, 87. Depressions and elevations, 81. Development hypothesis, 111. Devonian formations, 42. Diachronism, 125, 346. Diatomaceae in chalk, 64. Dinotherium, 72, 370. Dione, 228. Disturbances of strata, 54, 66. Dodo, 84. Double cocoa-nut, 296. Earth-pea, germination of, 299. Echinus, 190. Eggs of fowl, 328. of insects, 306. Elephant, dentition of, 266. fossil, 73. Elevations and depressions, 81. Encephalartos, 161. Euphorbia, 164. Erythrina, 297. Fairholm, Mr., opinions of, 12. Feather, growth of, 253. Feather-star, 193, 305. Fig, Australian, 162. Indian, 164. Fishes, cycloid, 68. earliest, 44. sauroid, 52. Fishes, scales of, 242. Foetus of kangaroo, 333. Footprints, 57. Foraminifera, 64, 70. Frog, 57. Gall-fly, egg of, 310. Ganges, delta of, 85. Geography, changes of, 60, 66,70. Geology, in need of caution, 4. Germs, hypothesis of, 294. Gilt-head, 241. Glaciers, theory of, 79. Gladiolus, 152. Globe, chronology of, 30. cyclicism of, 354. density of, 37. Gnats, egg-raft of, 207. Goliathus, 205. Granite, 37. decomposition and reconstruction of, 38. Grass-tree, 154. Gray, Mr., opinions of, 20. Grit, 46. Gulf-stream, 356. Gyroceras, 371. Hair, growth of, 278. Harris, Dr., opinions of, 19. Hawkmoth, 118. Hertfordshire, strata of, 33. Hippopotamus, 263. fossil, 73. Hitchcock, Dr., opinions of, 21. Horns of ibex, 257. stag, 258. Horse, 260. Hylaeosaurus, 62. Hypotheses, variety of, 27. Ibex, 257. Ichthyosaurus, 59. Iguanodon, 62. Infusoria in chalk, 64. Insects, eggs of, 306. Iriartea, 139. Julus, 212. Kangaroo, foetus of, 333. Kirkdale cave, 77. Labyrinthodon, 57. Lace-fly, egg of, 311. Lady-fern, 116. Law of creation, 337, 368, 371. Leaf-scars of fern, 130. Lepralia, 219. Lias, 58. Light, velocity of, 360. Lily, 156. Limestone coral, 45. Locust-tree. 177. London clay, 67. Loranthus, 169. "_Lusus Naturae_," 368. Macbrair, Mr., opinions of, 10. Madrepore, 183. Mammal, earliest, 63. Mammoth, 73. Man, introduction of, 83. structure of, 275. Mangrove, 173. germination of, 301. Marsupials, 82. Mastodon, 73. Medusa, 188, 304. Megalosaurus, 61. Melicerta, 210. Miller, Hugh, opinions of, 15. Millepore, 183. Moa, 84. Moho, 84. Moon, cyclicism of, 359. Mosasaurus, 65. Moth, eggs of, 314. Mountains, upheaving of, 66, 70. Murex, 233, 365. Nails, growth of, 277. Nature, circularity of, 113. plan of, 345, 369. Nautilus, 235. Navel, evidence from, 289, 334. Nerita, axis of, 365. Noah's flood, 6. Oestridae, economy of, 309. Oolitic system, 58, 60; duration of, 63. Opossum, 63. Organ-pipe, 185.