NATURAL HISTORY. 
the primitive, in others interstratified with the tran- 
sition slate. Its western-most edge may be traced 
from the southern ascent to Haldon in the parish of 
Chudleigh, on ina S, E. direction through several 
parts of that parish, (the Chudleigh rocks, &c.) by 
Ingsdon in the parish of Usington, and thence thro’ 
the parishes of Bickmgton, and Ashburton, to the 
Dart. A second more easternly range may be fol- 
lowed from Bishopsteignton and Kingsteignton, 
through Woolborough, East Ogwell, Denbury, 
Torr Bryan, and Broadhempston, (of all which 
parishes it forms a considerable portion, and Tran- 
sition slate the remainder.) More easternly still, 
we find it occupying a large part of Abbots 
Kerswell, Ipplepen, and Little Hempston, (which 
is the western boundary of this third range) Mary 
Church, (where the rocks frequently rise in a very 
picturesque and romantic manner) Torr-Moham, 
part of Marldon, (Aptor, &c,)—Berry Pomeroy, 
the southern part of Stoke Gabriel, (Watton, &c,) 
and Churston Ferrers—the two capes of Berry- 
head and Hope’s nose, being the eastern-most pvints 
of this range ; in all these parishes, except the two 
last named, it for the most part protrudes through, 
and is surrounded by the old red sand stone. 
The prevailing colour of this rock is blueish-grey, 
or black, with white veins; in some of the more 
easternly parts of the formation, where the basset 
ends protrude thro’ the red sand, the markings are 
more varied—red, and, occasionally, yellow sweep- 
ings and veins being frequent, as if (which is most 
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