Journal and Proceedings 
OF 
The Royal Society of 
Western Australia. 
PATRON: HIS MAJESTY THE KING. 
Volume V. 
1918 - 1919 . 
The Authors of Papers are alone responsible for the statements 
made and the opinions expressed therein. 
PRICE : Five Shillings. 
IPeitb : 
M6395/2 . 
BY AUTHORITY : FRED. WM. SIMPSON, GOVERNMENT PRINTER. 
1920. 
