ABSTRACT OF PROCEEDINGS. xlvii. 



Monthly Meeting, 9th July, 1913. 



Prof. T. W. E. David, in the Chair. 



Eight members and five visitors were present. 



A discussion took place as to the geological age of the 

 last orogenic (folding) movements which had effected the 

 state of N. S. Wales other than the New England District. 

 The discussion was opened by Mr. O. A. Sussmilch, who 

 outlined the known evidence, particularly that occurring 

 on the western and southern margins of the main coal 

 basin, and gave as his opinion that a great orogenic move- 

 ment took place at or near the close of the Upper Devonian 

 Epoch. 



Prof. David referred more particularly to evidence from 

 the northern margin of the Permo-Oarboniferous coal basin 

 and was of opinion that the Upper Devonian stata were 

 not folded until the end of the Carboniferous Period. 



Messrs. W. S. Dun and L. F. Harper also spoke on the 

 discussion, but no definite conclusion was arrived at. 



Monthly Meeting, 13th August, 1913. 

 Prof. T. W. E. David, in the Chair. 

 Eight members and seven visitors were present. 



Mr. W. S. Dun exhibited some recent geological publica- 

 tions relating to Egypt, Indo-China, and the United States. 



Mr. G. W. Card exhibited the following specimens : — 

 Native silver, C.S.A. Mine, Cobar ; torbernite, Carcoar, 

 N.S.W.; cervantite, Barellan, N.S.W.; joseite, Mount 

 Shamrock Mine, Queensland ; meteorite (new), Molong; 

 vein of native bismuth in wolfram, Torrington; topaz, 

 Rock Vale. 



Mr. L. F. Harper exhibited a relief model of the Illa- 

 warra District, showing the geological formations and gave 

 a summary of the results of his geological survey work in 



