64 Of STONES. 



A large, thick, brown flate, with broad, tranfveffe, parellel 

 channels, the intermediate fpaces tumid or fwelling in half 

 rounds, very beautiful. From a flate quarry on the top of the 

 wood at Con-Jheels, near Wark, in Tynedak. 



In the flate-quarry at Loiv Moralee, are three courfes of a dark 

 brown flate, thick fet with arenaceous cylenders of a light brown, 

 of the fize of a goofe-qulll. 



In the fame quarry is a courfe of light grey flate, with nume* 

 rous irregular blotches of black, of various fizes. 



There is alfo in the fame quarry a courfe of a large, brown flag 

 with thin lamina on the furface, refembling the waves of the fea, 

 very beautiful. 



Nodules of reddifh-brown free-ftone, with true Stalagmite, or 

 cruftated bodies, including one another, like cups, are frequent 

 on the fhore of the brook 



On the fhore of the river Coquet, below Welden-m\\\, I gathered 

 a nodule of whitifli-brown free-ftone with many longitudinal 

 parallel lines of a dark brown, like the veins or crufts of pebbles. 

 It is formed, like them, by incruflation. 



Whet-Jiones, for the finer tools, are rare. There is an approved 

 fort, of a dark greyifh-blue colour, found on the flrand of the 

 brook by Setlingjlones, above Nevubrough, near an old deferted lead- 

 mine. Thefe are of fo fine a grit, that they will give an excel- 

 lent edge to a razor. There are rocks of a plated ftone on the 

 edge of the brook, out of which thefe are warned by the floods, 

 but a long fearch may be made before a good one can be picked 



out j 



