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ON EVIDENCE OF GLACIAL ACTION IN N. S. WALES. 



Cumberland, and was an example of striation produced after the 

 rock had been consolidated. 



Dr. Blaneord gave an account of the boulder from the Punjab 

 Olive Bed on the table, and pointed out that the occurrence of large 

 blocks in fine shales had been first noticed, and this observation had, 

 in both India and Australia, been followed by the discovery of stri- 

 ated surfaces. 



The marine beds described by Mr. R. Oldham could not have 

 been formed by floods or violent water-action, for the shales con- 

 taining the boulders held imbedded delicate bivalves, with both 

 valves united, and fine Fenestellce ; the boulders must have been 

 transported by a different agency from the fine sediment. 



Prof. Seeley admitted the difficulty of judging the fragments ex- 

 hibited without seeing the sections. He could see no evidence of 

 glacial action in the specimens exhibited, and thought that similar 

 partly angular blocks might be gathered on any coast where the 

 cliffs were formed of rocks of like character. He had never seen a 

 glaciated fragment similar to that exhibited from the Punjab. The 

 unworn edges of the facets could scarcely have remained uneroded 

 if produced by glacial action. They had no resemblance to wind- 

 worn faces. 



Bev. E. Hill said the Punjab boulder might have shifted its 

 position in the bottom of a glacier. However, ice does not neces- 

 sarily imply a glacial age. 



Mr. Btjtley agreed with the last speaker that the stone in ques- 

 tion might have been faceted and scored by the action of ice. 



The President regretted the absence of Mr. David, but called 

 attention to the photographs sent by him as illustrating the nature 

 of the beds in which the blocks occur. 



