220 



INDEX. 



Centre of gravity of the Earth, 160. 

 Cephalopoda, 8, 32, 84, 98, 101. 

 Ceratites nodosus, 100. 

 Cetacea, 8, 12, 30. 



oily integument, 33. 



hind limbs, 43. 



earliest traces of, 107. 



Chamaeleon, toes, 41 ; tongue, 42. 

 Cirripedia, 89. 



Climate and the distribution of Life, 

 11. 



changes, 142. 



Tables, 157, 158. 



Clover on the Yorkshire heaths, 22. 

 Coal formation of Yorkshire and 



Derbyshire, probable age of, 132. 



of South Wales, 133. 



Coalbrook Dale, Ironstone nodules 



at, 115. 



Cockle, foot of, 36. 

 Coleoptera membranous wing, 40. 

 Colymbetes, propulsive organs, 35. 

 Colymbus, propulsive organs, 35. 

 Condor, the, 24. 

 Coniferae, 27. 

 Corals, 145. 



Crawfish, bending tail of, 34. 

 Crinoidea, 147. 

 Crocodilidae, 23. 

 Crustacea, 8, 89, 90. 

 Cryptogam ous plants, 26. 

 Cucurbitaceaj, 145. 

 Cuvier's classification of nature, 25. 



on constancy of specific form, 193. 



Cycadeoid Plants, 145. 



D. 



Darwin's computation of waste on 

 Wealden coast, 130. 



on Natural Selection, 200. 



theoretical views, 206, 213. 



Daubeny, experiments on plants, 7. 



Davidson's, Mr, investigation of Bra- 

 chiopoda, 199. 



Dawson, Dr, fossil tree found by, 116. 



De Luc's speculations concerning na- 

 tural chronometers, 139. 



De Maillet's Telliamed, 180. 



Derwent River, 140. 



Deshayes on crag-shells, 169. 



Desmoulins on constancy of specific 

 forms, 192. 



Development theory, 188, 208. 



Dicotyledones, 27. 



Dillwyn, his remarks on siphonosto- 

 matous shells, 97. 



Dimyaria, 94, 212. 



Diving movements in animals, 35. 



Draco volans, the, 40. 



Dytiscus, propulsive organs, 35. 



E. 



Echinodermata, 29, 86. 



Edentata, fossil and recent, 171 . 



Enaliosaurians, 8. 



Equiseta, 145. 



Equisetaceae, 27. 



Eyes, structure of, 9, 10. 



F. 



Falconidae, steering tails, 39. 



Filices, 27. 



Fishes, earliest traces of, 103. 



Flabellaria, 144. 



Flotation of the marine races, 



Foraminifera, 85, 210. 



Forbes, Edward, JEgean researches, 



15. 



Freshwater Life, 108. 

 Fritillaria, 21. 



s,32. 



