Mr. Winch on the "Eastern Part of Yorkshire. 547 
likely locality for rock salt ; and notwithstanding water impregnated 
with salt is a common product of the Newcastle coal field. 
On quitting the country just mentioned, the eastern side of 
Yorkshire, bounding the coast from the Tees to the Humber, com- 
prises three ranges of hills : 
1. The eastern Moorlands, or alum-shale district. 
2. The oolite limestone hills, rising to the south-west of Robin 
Hood’s Bay. 
3. The Wolds, composed chiefly of hard chalk. 
In this order I shall attempt to describe them.. 
The eastern Moorlands rise abruptly from the vale of Cleveland, 
and continue to do so to the south of Gisbro’, between which place 
and Ayrton, Roseberry Topping is a well-known land-mark for 
mariners on the German ocean, and measures, according to Colonel 
Mudge’s computation, 1022 feet in height. Together with Danby 
beacon, and other hills of inferior elevation, it forms the northern 
escarpment of the Cleveland chain, which from thence declines 
towards the south till it reaches the vale of Esk, and is succeeded 
by the oolite limestone ridge. 
The outline of the alum-shale district is extremely irregular. 
The immense bed of schistose clay just appears at the Salt Scar 
rocks, lying in the sea about two miles north of Redcar, which are 
covered by the tide at half flood. From this point it may he 
traced to the west of Gisbro’ ; then receding towards Newton and 
Ayton ; after that bending to the east of Stokesby ; from thence 
passing south-west to Arncliflfe, and south to Cosley, till, in the 
vicinity of Thirkleby, its western limit is reached : but the coal 
mines near Easingwold, situated still farther south, appear to be 
worked in the upper strata of this formation. From hence it turns 
north-eastward, and at length terminates on the coast below Scalesby, 
