D PROCEEDINGS 



OF THH 



ROYAL SOCIETY of SOUTH AUSTRALIA 



(INCORPORATED), 



-J 2- 



"VOL. X H, "V. 



[With Twenty-two Plates, and Twenty-seven 

 Figures in the Text.] 



EDITED BY PROFESSOR WALTER HOWCHIN, F.G.S., 



Assisted by ARTHUR M. LEA, F.E.S. { 





^ S 



. 



PRICE, NINE SHILLINGS 



3tbe(atbe : 



Published by the Society, Royal Society Rooms, North Terrace. 



DECEMBER 21, 1921. 



Printed by Gillingham, Swann & Co. Ltd., 106 and 108, Currie 

 Street, Adelaide, South Australia. 



Parcels for transmission to the Royal Society of South Aus- 

 tralia from the United States of America can be forwarded 

 through the Smithsonian Institution, Washington, D.C. 



