ranging E.S.E. betiveeti the Rivers Lime and fV/iarfe. 19 



Ascending- the steep hill side, strewed with loose blocks of slate, we find the 

 road from Settle toward Malham running- like that toward Ingleton, nearly on 

 the line of this dislocation; having- on the left a dry limestone hill 150 feet 

 hig-h, and on the right a moist surface of millstone g-rit. The limestone is pro- 

 truded to a bridge on the Kirby Malham road, (over a stream which comes 

 round the western side of Ryeloaf Hill,) there forming a fine amphitheatre of 

 rocks with a waterfall in the midst, and extending- in clifls about !200 yards 

 down the stream, where it is suddenly succeeded by millstone grit. These 

 appearances seem to indicate a flexure in the line of dislocation, which is after- 

 wards most satisfactorily traced between the gritstone summit of Ryeloaf, and 

 a limestone hill of at least equal height on the north*. 



Supposing, what I believe is the case, that this hill contains the whole series 

 of the lower limestones, the dislocation here may be taken at about 500 feet. 

 The different aspect of the herbage continues to denote and accompany the 

 dissimilar character of the contiguous strata by Lord Ribblesdale's Calamine 

 mines to the valley of the Aire, a little below IMalham. Afterwards, it proceeds 

 between Brown Hill and Gordale Scar, toward the south of the village of Sky- 

 thorne, beyond which point, whether its course be confused with the other 

 dislocations of the Grassington mining field, or may be laid down by future 

 observation, I have not yet ascertained. 



* See Section 11, Plate I. 



d2 



