Organic life a circle, 113, 122. Organisms, earliest, 40. Orchis, 152. Palm-leaf, young, 145. Penn, Mr., opinions of, 11. Phenomena, evidence of, delusive, 337. Plants of London clay, 67. "Plastic power," 368. Plates of tortoise, 250. Plesiosaurus, 59. Plumularia, 119. Powell, Professor, opinions of, 26. Prickly pear, 172. Prochronism, 125, 346, 368. dependent on cyclicism, 354. "Protoplast," opinions of, 23. Pterodactyle, 62, 370. Raindrops, 58. Rattan, 145. Rattlesnake, 247. Reptiles, Marine, 16, 59. Rhinoceros, fossil, 73. Roots, aerial, of fig, 163. of iriartea, 139. of mangrove, 173. of pandanus, 138. Rotifera, viviparous, 322. Sackcloth of palms, 141. Sandstone, age of, 50. new red, 56. old red, 42. Saw-fly, eggs of, 317. Scale of fish, 242. Scarlet-runner, economy of, 113. Screw-pine, 136. Scripture, efforts to reconcile with geology, 5. literal sense of, 4. Sea-urchin, 191, 305. Sea-pen, 182. Secondary epoch, 66. Sedgwick, Professor, on past time, 98. opinions of, 17. Selaginella, 133. Senses, evidence of, 1. Serpent, earliest, 68. Serpula, 198, 305. Sharks, 52, 58, 243. egg of, 326. Shells, now fossilizing, 89. Shore-crab, 216. Silk-cotton tree, 174. Silurian formations, 40. Skeleton, human, 286. Skeletons, evidence from, 105, 340. Sloths, fossil, 82. Smith, Dr. Pye, opinions of, 22. Smithia, elegance of, 371. Species, persistence of, 110. Spider, eggs of, 313. Stag, 258. Star-fish, madreporic plate of, 366. Stars, light from fixed, 361. Stature of man, 284. Strata, disturbances of, 54. number of, 37. Strombus, 230. Sugar-palm, 141. Sumner, Dr., opinions of, 19. Surinam toad, 327. Sword-fish, 240. Tapeworm, 195. Tapir, 69. Teeth of babiroussa, 262. Teeth of crocodile, 249. elephant, 268. hippopotamus, 263. horse, 261. man, 281, 285. shark, 243. Termes, 203. Terebella, 201. Tertiary epoch, 66. fauna, 76. Testimony, divine, 2; dear to many scientific men, 5; by some rejected, 8. Testudinaria, 158. Thames Tunnel, strata of, 32. Thyroid cartilage, 284. Timber, rings of, 178, 342, 349. Tortoise, 250. Tour of inspection, 127. Traveller's tree, 148. Tree-fern, age of, 128. Tree-frog, 246. Trilobites, 41. Truth, value of, 7. Tulip, seed of, 298. Tulip-tree, 165. Turner, Sharon, opinions of, 18. Tusk of elephant, 266. Ure, Dr., opinions of, 10. Venus, prickly, 228. "Vestiges," hypothesis of, 27, 111. Volcanic action, 55, 66, 86. Weevil, economy of, 308. Whalebone, 255. White ant, 203. World, projected history of, 351. Yorkshire, strata of, 33. Young, Dr., opinions of, 13. * * * * * FOOTNOTES: [1] Dr. Lardner; Museum of Science and Art, vol. i. p. 81.