412 



INDEX. 



Gordon, Alexander, Esq., on three forests of fir 



imbedded in peat, 140. 

 Granite not in fluid state when upheaved on 



coast of Sutherland, 356. 



in trachytic conglomerate, 349. 



of Ord of Caithness, 353. 



Grauwacke found in Manlan Ilill, near Wetma- 



Helmsdale, Sutherland, shelly limestone of, burnt 



for use, 305. 

 Henley, H. H. Esq., collection of fossil plants of, 



395. 

 Hippopotamus, bones of, in the valley of the Ira- 



wadi, 379, 



fossil remains of, found in the Ira- 



sut, 388. 

 of North Pembrokeshire, its southern 



boundary line, 8. 



district of St. David's, 9. 



. Haverfordwest, 9. 



south of the coal.basin in Pern- 



brokeshire, 10. 

 . ■ — Jamaica, 149. 



Gravel, diluvial, (Liguanea, Jamaica,) 184. 



Graystone of the Ponza Isles, 214. 



Gray wethers near Hungerford, 126. 



. co-extensive with the entire sur- 

 face of the chalk in more or less abundance, 

 126. 



Green-sand, lower, of N. W. of Sussex, &c. sup- 

 ports a number of lakes and ponds, 102. 



— of Lyme Regis and Beer, 108. 



of the vale of Kingsclere, 121. 



on the summits of the Savoy Alps, 



127. 



Grey, Sir George, fossil plant in the possession 

 of, 395, 



Gryphaia Maccullochii, new species, Pabba, 

 Skye, Mull, &c., 322. 



Gyrogonite, seed-vessel of Chara, 90. 



. of the Bakie, 91, 



— new species of, Chara tuberculata, 



(fossil), 94, 



H. 



Harting Combe, Weald-clay in, nucleus of the 

 district described in the memoir on the N.W, 

 of Sussex &c,, 97, 



Hastings, strata of, 30. 



cliffs of, not rich in organic remains, 30. 



wadi, 373. 



Hog, bones of, in the valley of the Irawadi, 

 379. 



Holm, Skye, cliflFand fossils of inferior oolite at, 

 310, 



Hornblende found near Ava, 389. 



Hyaena, bones of, supposed to have been found 

 at Brentford, in London clay, 390, 



Hypothesis, accounting for the creation of vol- 

 canic mountains, 340, 341, 



I.J. 



Jamaica, H.T, De la Beche, Esq., on the geology 

 of, 143, 



rocks, comparison of with those resem- 

 bling them in Mexico and South America, 

 190, 



Jameson, Professor, his description of the gra- 

 nite of the Ord of Caithness, 353 note. 



Ichthyolites of Gamrie described, 364. 



Inimore of Carsaig, trap rocks of, 312. 



Irawadi, supposed power of petrifying wood 

 possessed by the waters of, 403. , 



.^ bed of the river, thickly set with 



wooden piles between Rangoon and Ava, 403. 



. fossil remains of two new species of 



Haverfordwest: see Grauwacke. 

 Hawkley Slip, 100, 



Hazel nuts, great quantities of, among the trunks 

 of trees on the shore at Hastings, 35. 



Mastodon and other vertebrated animals, 

 found on the left bank of the, 369. 



Iron, hydrate of, in bones from Ava, 381. 



■ sand, formation of, Sussex, Gideon Mantell, 



Esq,, on the, 131. 



of the vale of Sussex, 103, 131. 



. quantify of calcareous matter in, 107. 



remains of vegetables in, 134. 



vertebrata in, 104, 134. 



works ancient in the Weald-clay, 103. 



Ischia, a principal volcanic vent, 338. 



form and structure of the mountain, 342. 



