Mr. Budsle's Synopsis of the Newcastle Coal Field. 235 



beds are united on that line of Section, at the Howdon Pit, and form 

 one stratum of 18 fathoms in thickness. 



Commencing at the new Engine Pit, at South Shields, the Grindstone 

 Post lies immediately under the Clay, and it does not again appear at 

 the surface on the line of Section till we arrive at the Felling Quarries, 

 near the William Pit, and again in the Grindstone Quarries, on Gates- 

 head Fell, from whence it derives its name. 



Commencing at its crop, on Gateshead Fell, and tracing it along the 

 line of the Section to the new Engine Pit, at South Shields, we find it 

 undergoes the following dislocations, depressions, and elevations : — 

 From the quarry, near the Seven Stars, on Gateshead Fell, it runs to 

 the 10-fathom upcast Dyke under Heslop's Pond, where it is thrown 

 out for about 50 yards. But it gains cover again under the crest of the 

 hill, behind Mr. Hall's house, and the dip of the strata, and continues 

 regularly dipping till it reaches the Heworth Dyke, which throws it 

 down about 25 fathoms to the north-east. From this Dyke it goes on 

 without interruption till it meets with an upcast Dyke, in Felling Col- 

 liery, of 25 fathoms, which brings it up to the surface again at the High 

 Felling Quarries. The descent of the ground here thins it considerably, 

 and meeting with another upcast Dyke of 16 fathoms, at 250 yards 

 from the former, it is thrown quite off above the surface. But this 

 same Dyke, as will be seen on the Section, throws the first division of 

 the 70-fathom Post up to the level of the Grindstone Post, so that but 

 for the fissure of the Dyke, the first division of the 70-fathom Post 

 might be mistaken for a continuation of the Grindstone Post. From 

 this point to about where our line crosses the river, at Felling Staith, 

 the Grindstone Post is wanting ; but at a little to the dip of this point, 

 it must, from the natural inclination of the strata, be found immediately 

 under the diluvium. It is found in the King Pit, at Walker, at the 

 depth of 35 fathoms, after having been depressed by a small Slip Dyke 

 of 3 fathoms. From the King Pit it runs direct to the B Pit, at Heb- 

 burn, without meeting with any material interruption, crossing the line 

 of the Whin Dyke immediately under the bed of the Tyne. Directly 

 on the east side of the B Pit, it is thrown up 5 fathoms by a Slip Dyke, 



