XXIV. ABSTRACT OF PROCEEDINGS. 



of Marginal Drainage, (Presidential Address to the Linnean 

 Society of N. S. Wales) by 0. Hedley. The discussion was 

 a very animated one, and was adjourned to the following 

 meeting. 



Monthly Meeting, 10th May, 1911. 



Mr. J. E. Oarne in the Chair. 



Thirteen members and four visitors were present. 



Mr. W. S. Dun exhibited a specimen of the fossil coral 

 Dlphyphyllum from the Molong District, and made some 

 remarks regarding the occurrence of Lower Devonian strata 

 in that region. 



The discussion started at the April meeting was con- 

 tinued and concluded. The general principle of the geo- 

 graphical unity of Eastern Australia in late Tertiary time 

 was agreed upon, but there was some difference of opinion 

 as to the nature and cause of the earth movement which 

 closed the Tertiary Period. 



Monthly Meeting, 12th July, 1911. 



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



Ten members and five visitors were present. 



Mr. W. N. Benson gave a detailed account of the geology 

 of the Nundle, Manilla, and Bingera districts, and Mr. Dun 

 exhibited fossils of Devonian Age (Spongophyllum, Favo- 

 sites, and Stomatopora), and Carboniferous (Lithostrotion) 

 in connection therewith. 



Monthly Meeting, 9th August, 1911. 

 Mr. R. H. Oambage in the Chair. 

 Nine members were present. 



An informal discussion was held on a paper by T. Griffith 

 Taylor, b.sc , on "The Physiography of Eastern Australia, ,, 



