48 



ILLUSTRATIONS OF THE 



ft 



and properties might change, it would 



an entire 



d continued 



ck, at leaa 



the efFeds of wafte and detritus had 



produced a fep 



This, however 



IS 



very 



far from being the adual condition of ftratified 

 bodies. Thofe that are much inclined, or that 

 make confiderable angles with the horizontal 



, mull terminate abruptly where they 

 come up to the furface. Their doing fo is a ne- 

 celTary confequence of their pofition, and furniih- 

 es no argument, it may be faid, for their having 

 been diilurbed, different from that which has 

 been already deduced from their inclination. 

 There are, however, inftances of a breach of con- 

 tinuity in the llrata, under the furface, that afford 

 a proof of the violence with which they have been 

 difplaced,' different from any hitherto mention- 

 are the flips oxJIAfts, that 



ed. 



Of 



nature 



fo often 

 journey 



plex the miner in his fubter 



d 



hich 



ch 



ge at once 



ofe 



rfe 



d bearings that had hitherto direded his 

 When his mine reaches a certain plane, 



which is fomet 



perpendicul 



fom 



oblique to the horizon, he finds 



th 



beds of 



rock broken afunder, thofe on the one fide of 

 the plane having changed their place, by Aiding 

 in a particular diredion along the face of the 

 others. In this motion they have fometimes 

 preferved their parallelifm, that is, the flrata 



on 



k. 



