-ElS 



ILLUSTRATIONS OF THE 



above the fpot where we now Hood. This, I be- 

 lieve, is the greateft thicknefs of fecondary ftrata 

 that has ever been obferved incumbent on the 

 primary, and it is therefore a geological fa(^ 

 highly deferving of attention. The country all 

 round, to a very great extent, is compofed of 

 limcftone, with a few beds of grit interpofed, 

 and forming, befide Ingleborough, fome other 

 high mountains, fuch as Wharnfide and Penni- 

 gant, all refting, it is probable, on the fame 

 foundation. 



At the fpot juft defcribed, no breccia appear- 

 ed to be interpofed between the primitive and 

 fecondary rock ; but we found a breccia at ano- 

 ther point of the fame junction, 



not far di 



ft 



ri"'* 



Ihi 



at a 



fcade. in th 



river 



Greata, called Thornton Force^ about two 

 and a half from the place juft mentioned. 

 Greata here precipitates itfelf from a horiz( 

 tal rock of limeftone ; and, after a fall of 



The 



bout eight 



-> 



or twentj feet 



received into 



bafon which it has 



niary 



fchift 



1 



iBoft perpendiculii 

 which has juft b 



worked out in the prir 



fchiftus is in beds al- 

 t exactly refembles that 

 defcribed, and ftretches 

 on. On the fouth fide 



nearly in the fame direction. 

 of the river a breccia was feen, lying upon the 



or rather, it might be faid, that the 

 loweft beds of limeftone contained in them ma- 



oy rounded fragments of ftone, which 



parifo 



n 



f 



i 



