CONTENTS. 



VOLUME XXXVIII. 



Page. 



Officers for 1904-1905 ... (vii.) 



List op Members, &c (ix.) 



Art. I. — Presidential Address. By F. B. Guthrie, f.i.c,f.cs., 

 Chemist, Department of Agriculture, N.S.W.j Acting Pro- 

 fessor of Chemistry, The University, Sydney 1 



Art. II. — On the absence of gum and the presence of a new diglu- 

 coside in the Kinos of the Eucalypts. By Henry G. Smith, 

 f.cs., Assistant Curator, Technological Museum, Sydney ... 21 



Art. III. — On some Natural Grafts between Indigenous Trees. By 

 J. H. Maiden, f.l.s., Government Botanist and Director, 

 Botanic Gardens. [With Plates'] 36 



Art. IV. — Possible Eelation between Sunspots and Volcanic and 

 Seismic Phenomena and Climate. By H. I. Jensen, B.Sc, 

 Junior Demonstrator in Chemistry and Geology, University 

 of Sydney. (Communicated by Prof. T. W. E. David, b.a., 

 f.r.s., etc.) ... ... ... ... ... ... 40 



Art. V. — On Eucalyptus Kinos, their value for Tinctures, and the 

 non-gelatinization of the product of certain species. By 

 Henry G. Smith, f.cs., Assistant Curator, Technological 

 Museum, Sydney ... ... ... 91 



Art. VI. — Notes on the Theory and Practice of Concrete-Iron Con- 

 structions. By F. M. Gummow, m.c.e. [With Plates] ... 105 



Art. VII. — Current Papers, No. 8. By H. A. Lenehan, f.r.a.s., 



Acting Government Astronomer. [With Diagrams] ... 129 



Art. VIII. — Further Experiments on the Strength and Elasticity 

 of Eeinforced Concrete. By W. H. Warren, Wh. Sc, M. Inst. 

 C.E., M. Am. Soc. c.E., Challis Professor of Engineering 140 



Art. IX. — The Flood Silt of the Hunter and Hawkesbury Rivers. 

 By Professor T. W. E. David, b.a., f.g.s., f.r.s., and Acting 

 Professor F. B. Guthrie, f.i.c, f.cs 191 



Art. X. — Ethnological Notes on the Aboriginal Tribes of New 

 South Wales and Victoria. By E. H. Mathews, l.s., Associe 

 etranger Soc. d'Anthrop. de Paris ; Corres. Memb. Anthrop. 

 Soc, Washington, U.S.A., etc 203 



