INDEX. 



PA.GB 



AiKiN ArthuRj Esq. Observations on a bed of Trap occurring 



in the colliery of Birch hill in Staffordshire . . 251 



^WwT'/a/ Fon??rtfwis of the North of Ireland . . . 193 



Alluvial land, small quantity in Sky . . .• . 18 



Analcime, found abundantly at Talisker in Sky ... 82 



Antrim, Description of the Sections presented by the Coast of 196 



Asbestus, its soft state while in the bed » . . . 285 



Barbadoefs, Dr. Skey's remarks on the structure of . , 236 



Successive terraces of different elevations in . 237 



Barytes, Sulphate of. Vein of, in the limestone of Cannington 



Park . . 365 



Basalt^ stratified, enormous mass covering secondary strata in 



the North of Ireland . . . . . . . 129 



Extent of the area of, in the North of Ireland , 179 



Tabular, in the North of Ireland . . , 181 



Columnar, in the North of Ireland, described . 181 



Mr. Convbeare's arguments in favor of its igneous origin 208 



Large spherical mass of, enveloped in the chalk on the 



coast of Antrim . . . . . . 212 



— overlying the chalk in Antrim and Derry, described , 198 



Basaltic Dykes, effect produced by their traversing chalk in 



the North of Ireland ..... 172 



remarkable one traversing the red sandstone of 



the Coast of Antrim 200 



Basaltic group of Mountains in the North-East of Ireland de- 

 scribed . . . . . . . . .127 



Bergkrj J. F. M.D. On the Geological Features of the North- 



Eastern Counties of Ireland . . 121 



On the Dykes of the North of Ireland . 223 



Bitumen, found in Bfirl/adoes . . . . . . 241 



Blaven, in Sky^ situation of the mountain so called . ' . 1? 



Vol. hi. 3 i 



