J U It N A L 



PROCEEDINGS 



ROYAL SOCIETY 



NEW SOUTH WALES 



FOR 



1919. 



(INCORPORATED 1881.) 



"VOL. LIII. 



EDITED BY 



THE HONORARY SECRETARIES. 



THE AUTHORS OF PAPERS ARE ALONE RESPONSIBLE FOR THE STATEMENTS 

 MADE AND THE OPINIONS EXPRESSED THEREIN. 



SYDNEY 



PUBLISHED BY THE SOCIETY, 5 ELIZABETH STREET, SYDNEY. 



LONDON AGENTS : 



GEORGE ROBERTSON k Co., PROPRIETARY LIMITED, 



17 Warwick Square, Paternoster Row, London, E.C. 



1919. 



