xlviii. ABSTRACT OF PROCEEDINGS. 



Monthly Meeting, 13th April, J 921. 

 Professor Sir Edgeworth David in the Chair. 

 Eleven members and four visitors were present. 



exhibits: 



1. From the Australian Museum:— (a) Quartz containing 

 wolfram and molybdenite in association, from Glen Eden, 

 near Glen Innes; (b) Tin ore from the Gulf Mine, Emma- 

 ville. 



2. From the Mining Museum : (a) Specimens of Tribrach- 

 iocrinus corrugatus from the upper bedsof tbeUpper Marine 

 Permo-Carboniferous of Bundanoon; (b) Specimens illus- 

 trating the occurrence of amosite, an amphibole asbestos, 

 in association with crocidolite, from the Transvaal ; (c) 

 Crystals of crude salt from Kangaroo Island, S.A. 



3. By Mr. T. L. Willan: Garnet-sillimanite gneiss from 

 the 1000-foot level, Broken Hill Proprietary Mine, Broken 

 Hill. 



4. By Judge Docker: Ironstone .concretions from Beau- 

 maris, Victoria, baving the appearance of replacements of 

 tree stems and roots. 



5. From Dr. W. G. Woolnough: Fossil wood of Tertiary 

 age from Malacoota Inlet, Victoria, and of doubtful age 

 from Merimbula, New South Wales. 



6. By Mr. W. R. Browne: " Sand-pipes," or pseudo- 

 fulgurites from Torquay, Victoria. 



discussion : 

 The adjourned discussion on Post-Tertiary movements of 

 the strand-line in Australia was resumed. 



Geological sections at Adelaide and in Sydney Harbour 

 were exhibited by the Chairman. Contributions to the 

 discussion, including remarks on the significance of the 

 Sydney Harbour section, and on strand-line movement in 



