CONTENTS. 



VOLUME LIII. 



Page. 

 Art. I. — Presidential Address. By W. S. Dun. (With Diagram) 



Issued September 8th, 1919 1 



Art. II.— On some Australian Freshwater Copepoda and Ostracoda, 



By Miss Marguerite Henry, b.Sc (communicated by Prof. 



S. J. Johnston). [With Plates I, II.] Tssned July 2nd, 1919. 29 

 Art. Ill, — Some Notes on Neurosoria pteroides," by Eev. W. W. 



Watts. [With Plates III, IV.'] Issued Sept. 22nd, 1919. ... 49 

 Art. IV. — Notes on Eucalyptus, No. VII., with descriptions of new 



species. By J. H. Maiden, i.s.o., p. r.s. Issued Sept. 22nd, 1919. 57 

 Art. V.-— Volume Changes in the Process of Solution. By G. J. 



Burrows, B.Sc. (Communicated by Prof. C. E. Fawsitt). 



Issued September 30th, 1919 74 



Art. VI. — Note on Orga no-metallic Derivatives of Chromium, 



Tungsten and Iron. By G. M. Bennett, m.a., m.sc. and 



E. E. Turner, b.a., m.sc. (Communicated by Prof. J. Read). 



Issued September 30th, 1919 100 



Art. VII. — Vocabulary of One Hundred and Fifty-four Words of 



the Yuckaburra Dialect, spoken by the Munkeeburra, South 



Kennedy District, Cape River, Queensland. By J. P. de 



Beuzeville, (communicated by W. A. W. de Beuzeville). 



Issued September 30th, 1919 - 102 



Art. VIII. — Notes on Eucalyptus, No. VIII., with desciiptions of 



two new Western Australian species. By J. H. Maiden, 



i.s.o., f.r.s. Issued November 18th, 1919 107 



Art. IX. — A. note on a relation between the Thermal Conductivity 



and the Viscosity of Gases. By Professor J. A. Pollock, f.r.s. 



Issued December 19th, 1919 116 



-A|KT^^--^fetee new species of Leptospermum. By E. Cheel. 



'* "Issued November 28th, 1919 120 



Art. XI. — On the Hydrolysis of Urea Hydrochloride. By G. J. 



Burrows, b.Sc. Issued December 19th, 1919. 125 



Art. XII. — Notes on the Elastic Properties of Selenium. By Assis- 

 tant-Professor O. U. Vonwiller, b.sc. Issued December 



30th, 1919 136 



Art. XIII. — Acacia Seedlings, Part V. By R. H. Cambage, f.l.s. 



[With Plates V- IX. J Issued February 4th, 1920 144 



