440 



INDEX. 



Organic remains, abundant in Barbadoes 

 of the Chalk in Cambridgeshire 



of the Limestone of Somersetshire 



PAes 

 237 

 250 

 369 



Pearlstone porphyry, occurs in the Basalt district of the North 

 of Ireland ........ 



Peclierz, found in Cornwall ..... 



Phillips, Mr. W. On the Oxyd of Uranium the production of 

 Cornwall ........ 



Finite, found in porphyry near Glen Tilt 



Pitchstone, of a singular character found in Sky 



porphyry, occurs in the basalt district of the North 



of Ireland ......... 



Porphyry, in the North of Ireland^ described 



occurs in the basaltic area of the North of Ireland 



singular variety of, found in Glen Fernat 



Prehnite, occurs in trap veins in Sky 



Quantock hills, in Somersetshire, described . . 



Qtiartz rock, one of the oldest rocks in Sky 



and Mica slate generally found alternating 



appears to have been stratified in Sky 



numerous Trap veins in, in Sky 



in contact with and conformable to beds of red 



sandstone, at Ord, in Sky 



Limestone with shells between beds of 



Limestone and red sandstone alternating with 



contact of other stratified rocks with, at Loch 



Eishort, in Sky . . • .. 



_. dark blue stratified with beds of clayslate 



superimposed on the granite in Glen Tilt 



passing into granite in Glen Tilt 



Red hills, in Sky, described . . . 



Bed marie, in the North of Ireland, described 

 Red sandstone, its position, in Sky . , . . , 



190 

 113 



112 



308 



94 



190 

 143 

 189 

 310 

 80 



339 

 28 

 28 

 30 

 30 



30 

 31 

 31 



31 



32 

 303 

 293 



14—68 

 131 



