INDEX. 



121 



nautilus, i. 247 ; ditto in ammo- 

 nites, i. 265 ; ditto in belemnites, 

 i. 288. 



Hyenas, bones collected by, in ca- 

 verns, i. 80, 



Hylaeosaurus discovered by Mr. 

 Mantel), i. 185 ; peculiar charac- 

 ter of, i. 185. 



Hythe, large hamite found at, i. 

 278. 



Ichthyodorulites, or fossil spines, i. 

 220 ; uses and variety of, i. 220, 

 221. 



Ichthyosaurus, geological extent 

 and chief localities of, i. 133 ; 

 curious structure of, i. 133, 134 ; 

 number of species, i. 134; head, 

 partaking of the character of cro- 

 codiles and lizards, i. 135 ; jaw, 

 length of, i. 135 ; teeth, charac- 

 ter and number of, i. 135, 136 ; 

 how differing from crocodiles, i. 



135 ; contrivances for replacing, 

 i. 136 ; eyes, magnitude of, i. 



136 ; eyes, microscopic and tele- 

 scopic properties of, i. 136; eyes, 

 bony sclerotic of, i. 137, 138; 

 jaws, composed of many thin 

 plates, i. 138 ; jaw, lower, contri- 

 vances in, i. 139 ; vertebrae, num- 

 ber of, i. 140 ; vertebrae con- 

 structed like those of fishes, i. 

 140 ; ribs, structure of, and to 

 what purpose subservient, i. 141 ; 

 sternum like that of ornithorhyn- 

 chus, i. 142 ; paddles, anterior, 

 like those of whales ; posterior, 

 like those of ornithorhynchus, i. 

 143, 144 ; concluding remarks 

 upon, i. 145, 146; intestinal struc- 

 ture of, i. 147 ; skeleton of, con- 

 taining coprolite, i. 150 ; small 

 intestine spiral, like that of sharks 

 and rays, i. 151; final cause of 

 spiral intestinal structure, i. 153 ; 

 skin of preserved, ii. 22 ; mecha- 

 nism of atlas and cervical verte- 

 brae of, ii. 24 — 26. 



Igneous rocks, various phenomena 

 of, ii. 5—9. 



Iguana, modern, habits of, i. 186 ; 

 dentition of, i. 190. 



Iguanodon, discovered by Mr. Man- 

 tell, i. 185 ; remains of, where 

 found, i. 185, 186 ; a gigantic 



VOL. II. 



herbivorous reptile, i. 185 ; teeth 

 like those of the modern iguana, 

 i. 186 ; the largest of known fos- 

 sil reptiles, i. 185, 186 ; climate 

 indicated by remains of, i. 187 ; 

 teeth, peculiar character of, i. 188 

 — 191 ; bony horn on the nose of, 

 i. 188 ; food of, probably tough 

 vegetables, i. 189. 



Indusiae, fossil in fresh water forma- 

 tion of Auvergne, i. 98. 



Infusoria, Ehrenberg's observations 

 on, i. 336, 337 ; number of spe- 

 cies described, i. 336 ; their 

 powers of reproduction, i. 336 ; 

 their manners of increase, i. 337; 

 universal diffusion of, i. 337 ; 

 found fossil, i. 237. 



Injection of igneous rocks at vari- 

 ous periods, ii. 6. 



Ink bags, recent and fossil of loligo, 

 i. 230. 



Insects, fossil in carboniferous strata, 

 308 ; wing covers of, at Stones- 

 field, i. 310 ; Count Munster's 

 collection of from Solenhofen, i. 

 310 ; many fossil genera in ter- 

 tiary strata, i. 310. 



Iron, ore abundant in coal forma- 

 tion, i. 59; quantity of, annually 

 made in England and Wales, i. 

 397. 



Isle of Wight, iguanodon found in, 

 i. 186. 



Jaeger, Professor, has found copro- 

 lites in Wirtemberg, i. 149 ; his 

 work on fossil plants, i. 368. 



Jardine, Sir W., fossil footmarks 

 found by, i. 198. 



Juli, supposed fir cones, are copro- 

 lites, i. 155. 



Kaup, Professor, notice on the foot- 

 steps of chirolherium, i. 202 ; his 

 description of fossil mammalia at 

 Epplesheim, i. 78 ; his descrip- 

 tion of dinotherium, i. 110, 111. 



Kepler, his prayer, i. 19. 



Killery, cemetery in a sand bank at, 

 i. 87. 



King, Captain, animal of spirula 

 found by, i. 274 ; serolis found 

 by, i. 296. 



Konig, Mr., his account of human 

 11 



