from Penigent to Kirkhy Stephen. 91 



Such are the striking phenomena along the line of section. In order to 

 make the structure of the region still more clear, and to connect it with the 

 mountain tract at the head of Swaledale, I proceed to describe, very briefly, 

 two other sections — one commencing at the top of Penigent — and the other 

 at the top of Whernside, and both diverging considerably from the bearing 

 of the principal line. 



Section from Penigent to the top of Stags Fell, near Hawes ; mean bearing 



about N.N.E* 



The strata of Penigent have been already described. If the line of section 

 be made to range along the south side of the valley, above the village of 

 Horton, we shall arrive at the great vertical chasm called Ling Gill, which 

 gives a series of fine, bare sections, through almost every part of the Scar 

 limestone. 



Continuing the section nearly in a straight line, over the summit of Cam 

 Fell, we first cross the outgoings of all the groups up to the twelvefathom 

 limestone, forming the great plateau above Cam Houses, and find that the three 

 groups (Nos. 9, 10. 11.) which were confounded together in Penigent, are 

 here exhibited with their true relations. We then cross the great upper shale 

 and the first millstone grit (No. 12. 13.), and rise to the summit of Cam 

 Dod, which is buried under peat moss ; and from that point may see the pro- 

 longation of the twelvefathom limestone down Wensleydale, forming on both 

 sides of the valley the crown of a long range of flat-topped elevations f. 



Descending to Hawes, which stands upon the upper part of the Scar 

 limestone, we cross all the successive groups in regular order. The coal 

 (No. 10. b.) has been worked both on the east and west sides of Cam, and 

 the lower coal seam (No. 6. b.) is still worked near the village of Gale. 



In the range of the sectional line, on the other side of the valley, over 

 Stags Fell, we again cross the same successive groups, in the ascending 

 order, till we reach the great overhanging plateau of the twelvefathom lime- 

 stone ; and we may remark, by the way, that it is traversed by a cross vein, 

 with a downcast of several fathoms towards the south-east. Rising from this 

 plateau to the top of the mountain ridge, between Wensleydale and Swale- 

 dale, we first cross the upper shale (No. 12.) and the first millstone grit 

 (which is not far from the highest level of the road from Hawes to Muker) : 



* Plate VI. fig. 3. 



t The summit of Cam Dod is probably composed of beds subordinate to the group (No. 14.) 

 over the Jirst millstone grit. 



N 2 



