60 



, 

 8 APPENDIX. 



61. Intermediate 126 /. 



Sixty-first bed 3 f. 8 i. In two layers. 



All the intermediate beds are of argillaceous or calcareous 

 stone. These substances also often appear in the thickness 

 of the coal beds. Sometimes these beds are divided into two 

 or three layers by houage, or black clay, and by geantrax, a 

 kind of ampelite *. 



This enormous mass of coal seems to form a continuation 

 of those of Huy, Namur, Anzin, Mons, Tournay, Valen- 

 ciennes. 



No. V, Strata at Portsoy, Scotland. 



{[From Mr. Jameson's Mineralogy of the Scotish Islands, vol. ii. 

 p. 270, seqq.] 



" We now continued journeying along by the sea-shore, 

 that we might have a better opportunity of discovering any 

 interesting appearances which were to be observed. The 

 cliffs continue to Sandside to be composed of nearly vertical 

 strata of talcaceous and micaceous schistus; but upon the 

 south side of Sandside I observed a considerable stratum of 

 steel-grey, foliated limestone, which lies upon an ardesia, or 

 primitive argillaceous schistus, and this ardesia appears to be 

 covered by a breccia. As the sea covered the greater part of 

 this rock of breccia, I could not determine with certainty its 

 position with regard to the limestone. After passing this 

 stratum of limestone, which, we were informed, runs a con- 

 siderable way into the country, we came to an immense mass 

 of breccia which seemed to be quite insulated : it is not im- 

 probable, however, that before the sea had washed away the 

 talcaceous schistus, the breccia would have been observed co- 

 vering it. We still continued our journey along the shore 

 until we came within a quarter of a mile of Portsoy ; and in 



* Ampelite, Brongn. i. 561, is aluminous slate and black chalk. P. 



