'RANSACTMS AID PROCEEDINGS 



or THB 



ROyALSOCIEIKofSflUTyUSTRALIA 



(IMCORPOHATCD). 



[With Twenty-three Plates, and Twenty-four 



Figures in the Text.] 



EDITED BY PROFESSOR WALTER ^pcr\YCiy^Ni,,F,,G.S. 

 AsgiSTED BY ARTHUR U/iS^, FES. 





PRICE, TEN SHILLINGS AND SIXPENCE. 



Published uy the Society, Royal Society Rooms, North Terbaoe. 

 DECEMBER 24, 1920. 



PkINTKD HY Hl'xSKV cV t'IM.INGUAM, LiMITED, lUt) AND U »> LUKHIF. 



Street, Adelaide, South Australia. 



Parcels for transmission to the Royal Socioty of South Au»< 



tralia from tho United States of America can bo forwardod 



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