.Q8 DESCRIPTION OF THE STRATA. 



Avith ArnclifF, Osmotherley hill, and Silton hill, on the west. Some of 

 the highest points in this chain are Stoupe Brow hill, Lilhoue cross, 

 Cock Heads, Ralph Cross, Burton Head, Coldmoor, and Craniraoor. 

 Cock Heads and Ralph Ci'oss, are about 1400 feet above the level of 

 the sea, the elevation of Burton Head is 1485 feet, and Coldmoor 

 and Crauimoor are about the same height. 



Kildale, Commondale, and the vale of theEsk, divide these hills 

 from the second chain; which, commencing with the west cliffs of 

 Whitby, and those of Kettleness and Runswick, has its western ex- 

 tremities at High Cliff Nab, Rosebury Topping, and the hills that 

 overlook Little Ayton and Easby. Danby beacon, near the centre of 

 this chain, is 966 feet above the sea, and the height of Rosebury, well 

 known for its conical summit, is 1022 feet. High Cliff Nab, and a 

 few other elevated points towards the west end of the chain, may also 

 rise about 1000 feet. 



The third and lowest chain, which is also the most narrow and 

 broken, is separated from the foregoing by the vales of Dalehouse, 

 Lofthouse, Skelton, and Guisborough. It begins at the high cliffs of 

 Boulby, and skirting the shore as far as Huntcliff, proceeds from 

 thence along the south side of the fertile plains of Marsk and Kirk- 

 leatham, finishing its course at Hambleton End and Bernaldby moor, 

 near Ormesby. The summit of this moor, Eston Nab, has an eleva- 

 tion of 784 feet; that of Boulby or Easington heights, at the other 

 end of the range, is 681 feet; and that of Birdley* moor, beside 

 Upleatham, which is near the centre, is 533 feet. 



Of these three chains of hills, the first is about 35 miles long, 

 and from 5 or 6 to 10 or 12 broad; the second is about 18 miles in 

 length, and from 3 or 4 to 7 or 8 in breadth ; and the length of the 



* The names Birdley and Bernaldby have been sometimes written improperly Burleigh 

 Mild Barnabij. Burton Head has in like manner been transformed into Botton Head. 



