8 Transactions of the South African Philosophical Society. 



isolated glaciated pebbles are to be found far outside their range as 

 known at present. 



The striated stones have only been found in the lower hundred 

 and twenty feet of the shale band, and below their upper limit the 

 mudstone becomes bedded, and finally a thinly-laminated shale. 

 Above the shale band the uppermost thousand feet or so of the 

 formation seem to differ in no way from the sandstones below the 

 shale band, so the fluviatile conditions returned and were main- 

 tained for a long period before the sea encroached upon the area 

 and the Bokkeveld beds with their marine fossils began to be laid 

 down. 



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