236 J orks/iirc Xafiira/isfs at /ni^/c/on. 



of the iifreat faults. A little to the north-west, far below, was 

 Black Burton, on the lnj,''leton Coalheld, the Coal Measures 

 near having a covering of Permian rocks. On the opposite 

 side of the Ingleton \alle\', at a much greater elevation than 

 these, could be seen the fine section of Carboniferous Limestone 

 in the Meal Bank quarr\ , the beds dipping rapidly to the S.W. 

 towards the fault. A little more to the north, rather higher 

 than the limestone, was the Silurian slate quarry. 



Getting on to the high road, the line of fault was soon 

 crossed, and the party was on the main exposure of the Lower 

 Silurian Slates and Grits. 



Considerable attention was de\oted to a quarry at Skirwith. 

 The junction of the Carboniferous and Silurian beds gi\es 

 rise to a line of powerful springs. Here the water forms a 

 beck which has cut down into the Slates and Grits, which are 

 almost \ertical. Resting on these, and forming the floor of 

 the quarry, is a bed of very coarse conglomerate, containing 

 large pebbles, apparently derived from the underlying rocks. 

 Over this is a bed of limestone, then more conglomerate, much 

 finer than the lower one, consisting mainl\- of small water- 

 worn fragments of slate, cemented together with calcareous 

 matter. Above this the limestone gets gradually more free 

 from derived materials, though for some thickness current- 

 bedded thin lines of small pebbles and grains occur. On one 

 large feathered face of the rock these wa\y bands or lines of 

 harder material stood out well, forming a beautiful picture. 



Higher up the road, near the waterworks, the limestone w as 

 seen resting immediately upon the edges of the Silurian rocks, 

 the conglomerate being absent. Those who saw this section 

 will remember it from the following description : —'As we went 

 along the Askrigg road from Ingleton, about a mile and a half 

 from the latter, an opening appeared in the side of the hill, on 

 the right, about one hundred yards from the road, formed by a 

 large stone which lay horizontally, and was supported b\- two 

 others standing upright. On going up to the spot we found it 

 was the mouth of a small ca\e, the stone lying horizontally 

 being part of a limestone bed, and the two upright stones 

 vertical plates of a primary argillaceous schistus. The lime- 

 stone bed which formed the roof of the ca\ e was nearlv 

 horizontal, declining to the south-east ; the schistus, neaily 

 vertical, stretching from north-west by west to south-east b\ 

 east. The schistus, tliougli close in contact with the lime- 

 stone, seemed to contain nothing calcaii-ous, and did not 



Naturalist, 



