4 Mr. N.- J. Winch on the Geology of 



the coast in the neighbourhood of South Shields in the county of 

 Durham that this formation first becomes extensive. From this 

 point it swells into a range of low round-topped hills, and is seen 

 stretching towards the south-west, protruding into the Coal-field, 

 and forming an undulating line by Cleadon, Boldon, Clacks Heugh 

 upon the Wear near Hilton castle, Painshaw, Houghton-le-Spring, 

 Sherburn, Coxhoe, Ferry hill on the turnpike road leading from 

 Durham to Darlington, Merrington, Eldon, Brussleton, Morton, 

 Langton, and Sellaby, till it reaches the Tees below Winston bridge 

 thirty miles west-south-west of that river's junction with the sea, and 

 forty-four miles from the Tyne at South Shields. The sea coast 

 forms its eastern boundary for twenty-seven miles and a half from 

 the Tyne to the rocks of Hartlepool, and the red sandstone already 

 mentioned from Hartlepool to the termination of that rock west of 

 Croft bridge. 



The same bed is afterwards continued through Yorkshire, Derby- 

 shire and Nottinghamshire, to the neighbourhood of Nottingham, 

 where it suddenly terminates. 



Of the hills of this rock, protruded into the Coal-field, Painshaw 

 near Lambton appears to be the highest, being probably not less 

 than 400 feet above the level of the sea. Kirk Merrington, situated 

 on one of these hills may also be seen to a considerable distance. 



The quarry at Whitby near Cullercoats affords the geologist an 

 excellent opportunity of ascertaining that the magnesian limestone 

 overlies the coal-measures, and that the latter were consolidated 

 before the limestone was deposited upon them. I shall therefore 

 describe that curious spot. 



A hollow space formed like a basin or trough is filled with the 

 limestone.* The length of this from east to west is about a mile ; 



* Plate 4, fig. I, 



