658 
INDEX. 
PAGE 
Hen slow, J. S. Esq. supplementary observations to Dr. 
Berger’s account of the Isle of Man .... 482 
Himala mountains , observations on specimens collected 
On them ......... 60 
Hornblende, colour of, affected by the weather . 147 
Hornblende Slate, in the Isle of Man ..... 498 
Hot Springs in Ceylon . . . . . . 313 
at Sitacund ....... 349 
Hudson’s Bay, notes concerning the geology of part of 
North America, lying to the west of it . 598 
Hyalite, in the great Nitre Cave, Ceylon .... 319 
Jasper , found in New South Wales ..... 480 
Jasper , Green , in the Isle of Mull ..... 374 
Ichthyosaurus, a fossil animal, its characters described . . 563 
— * r geological seat of . . . . . 580 
Imatra, description of the rapids of .... 340 
Ireland, memoir on the geological relations on the eastern 
part of it . . ■ ... . . . 117 
" , cause of the fertility of its soil . . . 122 
Iron ore, in Ceylon . 317 
in the Ghauts ........ 329 
— — on the Neva ........ 441 
in the eastern part of Y orkshire .... 553 — 548 
Irton, Edward L. Esq. on the vitreous tubes found at 
Drigg, in Cumberland 617 
Killinite, found in granite veins . . , . . .135 
Lapis ollaris, occurs in Malabar 332 
Laterite , a ferruginous stone, so called by Buchanan, found 
in the Ghauts 329 
Lava, observations on that from Torre del Greco . . 11 
Lime, carbonate of, remarks on its cleavages . . .. 83 
Limestone, a range of hills of, in the upper part of Hindostan 63 
■ 1 on the beds of it, in the neighbourhood of Bristol . 95 
