( 25S ) 
5CXI. — Sketch of the Geognosy of Part of the 
Coast of Northumberlandi 
By W. C. TiiEVELYAN, Esq. M. W, S, 
{Read mil November 182^.) 
HAT part of the coast of Northumberland of which t 
shall attempt to give a short account, extends from Budle 
Granei-y to Iselstone, south of Bamburgh, and is about 
three miles in length, 
A little west of the Granfery is a trap dike or vein, about 
six feet wide ; bfeyond which are alternations of lime, sand- 
stone, and shale. In the superincumbent earth are large 
angular masses of a red limestone, containing madrepores^ 
and other organic remains^ 
East of the Granery^ We meet with a bed of trap, \vhicH 
contains small particles of iron-pyrites, calcareous spar, and 
quartz. About half-way between the Granery and Budle 
Point, a distance of about half a mile, a bed of limestone 
occurs, resting oli the trap. The shore^ extending front 
Budle Granery to this point, is at times covered with a 
sand of a beautiful appearance, which contains iron (at^ 
tracted by the magnet), garnets, and perhaps iserine»' 
VOL. IV, s 
