1M 
Wales are chlorite schist, or grauwacke. Granite 
occurs at mount Sorrel, in Leicestershire. The 
great range of the mountains in Cumberland and 
Westmorland, are porphyry, chlorite, schist, and 
grauwacke; but granite is found at their western 
boundary. Throughout Scotland the most ele- 
vated rocks are granite, sienite, and micaceous 
schistus. No true secondary formations are found 
in South Britain, west of Dartmore ; and no 
basalt south of the Severn. The chalk district 
extends from the western part of Dorsetshire, 
to the eastern coast of Norfolk. The coal 
formations abound in the district between Gla- 
morganshire and Derbyshire ; and likewise in the 
secondary strata of Yorkshire, Durham, West- 
morland, and Northumberland. Serpentine is 
found only in three places in Great Britain ; near 
Cape Lizard in Cornwall, Portsoy in Aberdeen- 
shire, and in Ayrshire. Black and grey granular 
marble is found near Padstow in Cornwall ; and 
other coloured primary marbles exist in the neigh- 
bourhood of Plymouth. Coloured primary marbles 
are abundant in Scotland ; and white granular 
marble is found in the Isle of Sky, in Assynt, and 
on the banks of Loch Shin in Sutherland: the 
principal coal formations in Scotland are in Dum- 
bartonshire, Ayrshire, Fifeshire, and on the banks 
of the Brora, in Sutherland. Secondary limestone 
and sandstone are found in most of the low countries 
north of the Mendip hills. 
In Ireland there are five great associations of 
primary mountains ; the mountains of Morne, in 
the county of Down ; the mountains of Donegal ; 
