^34 



Illustrations of the 



iTiiich conneded 



th the prefent argumeni 



This appearance confifts of fmall waving 



dul 



on the furface 



f th 



precifely 



plates of fchift 



to thofe marks which are left 



bj the fea on a gently inclining beach of fand 

 at the ebbing of the tide. All the fpecies of 



feem to afford inftances of thefe 



ch do fo, are, I think. 



fchiftus do 

 wavings. 



The rocks wh 



chiefly of the argillaceous kind, but often highly 



ontaining the 



It with 



have been the fea ading 



indurated; fo that the lamina.^ ( 

 imprefiions are not to be torn afunder b 

 great difficulty. Inftances of it abound in the 

 fchiftus of Berwicklhire, and are alfo not unfre- 

 quent in that of Galloway. All mult agree 

 about the agent which produced thefe marks ; 

 it could be no other than the fea ; but it mull 



w 



on loofe, fmall and 

 round particles, lying on a furface which was 

 nearly horizontal. 



209. Dr Button's theory is no Where ftronger, 

 than in what relates to the elevation and inflex- 

 ion of the flrata ; points in which all others are 

 fo egregioufly defeclive. The phenomena to be 

 conneded are here extremely various, and even 

 in appearance contradidory : the horizontality 



^ 



of one part of the ftrata ; the inclined or verti- 

 cal pofltion of another ; the perfed planes in 



which one fet are extended j the breaking and 



diflocation 



