MINERALOGY. 457 



tind by the vale of Pickering on the south. This 

 high and extended situation may he divided into 

 four parrallel ridges gradually rising from the south, 

 and falling abrubtly in steep cliffs to wards the north. 



The first of these ridges begins at the vale of the 

 Esk, and includes Gillamoor, Spaunton, Caw 

 thorne, Saltergate, Crosscliff, Laugdale, Selph- 

 houe, Seamer, and extends nearly to Scarborough. 

 These hills are similar in height, and regular in their 

 abrupt northern descent, forming the same angle 

 \vith the horizon. They have the same smooth ap- 

 pearance wearing a covering of short ling and 

 moss, rarely presenting any broken ground or ua- 

 ked rock. 



The second ridge is extensive and forms the 

 central and most elevated part of the Moors, in- 

 cluding Cranimoor, Coldmoor, Burtonhead, Ralph- 

 cross, Cockheads, Silhoue, Lillacross, and ends 

 at Peak. 



The western part of this ridge is far the most 

 lofty, the heights at Cockhead and Ralphcrosa 

 being 1400 feet above the level of the sea ; Burton- 

 head 1485 feet, and Cranimoor upwards of 1500 

 feet. A spectator at Cranimoor, can observe the 

 sea, over the summit of Rosebury. This ridge is 

 of great breadth it reaches from Danby-dale, to the 

 valley of Lestingham and Hutton, comprehending 

 the moors of Aislaby and Danby. 



The third ridge is separated from the second by 

 the vales of the Esk, Commondale and Kildale, and 

 from the fourth by Dale-house, Lofthouse, SkeU 

 ton and Guisborough. 



The fourth begins at the western extremity of 

 Barnaby-moor, and terminates at the lofty cliffs of 

 Boulby. The highest parts of this ridge, are 

 Easington height, Huntcliff, Burleighmoor, and 

 Eston knab, which rises from six hundred to eight 

 hundred feet above the level of the sea. 



That ridge on which Kirkby-Moorside is built, is 

 of the limestone formation, which like all other 

 rocks in this district are of a secondary description, 

 which are seldom parrallel to the horizon, but ffe,, 



