JOURNAL 
AND 
PROCEEDINGS 
OF THE 
ROYAL SOCIETY 
OF 
NEW SOUTH WALES 
FOR 
1918. 
(INCORPORATED 1881.) 
Wim eee, 
EDITED BY 
THE HONORARY SECRETARIES. 
THE AUTHORS OF PAPERS ARE ALONE RESPONSIBLE FOR THE STATEMENTS 
MADE AND THE OPINIONS EXPRESSED THEREIN. 
ZAT 134 
SYDNEY: 
PUBLISHED BY THE SOCIETY, 5 ELIZABETH STREET, SYDNEY.. 
LONDON AGENTS : 
GEORGE ROBERTSON & Co., PROPRIETARY LIMITED, 
17 Warwick SQquaRkz, PATERNOSTER Row, Lonpow, E.C. 
1918. 
