CONTENTS. 



VOLUME XXXIX 



Page. 



Officers for 1905-1906 (vii.) 



List of Members,, &c ... (ix.) 



Art. I.— Presidential Address. By C. O. Burge, M.Inst. C.E., 



Telford Medallist, Inst. C.E 1 



Art. II. — On the occurrence of Calcium Oxalate in the Barks of 

 the Eucalypts. By Henry G. Smith, f.c.s., Assistant 

 Curator, Technological Museum, Sydney, [With Plate] ... 23 



Art. III.— On so-called Gold-coated Teeth in Sheep. By A. 

 Liversidge, ll.d., f.r.s., Professor of Chemistry, University 

 of Sydney ... ... ... ... ... 33 



Art. IV. — Observations on the Illustrations of the Banks and 

 Solander Plants. By J. H. Maiden, Government Botanist, 

 and Director of Botanic Gardens, Sydney ... ... ... 34 



Art. V. — The refractive indices, with other data, of the oils of 118 

 species of Eucalypts. By Henry G. Smith, f.c.s., Assistant 

 Curator, Technological Museum, Sydney ... ... ... 39 



Art. VI.— Note on the drift of S.S. " Pilbarra." By Henry A. 



Lenehan, f.r.a.s. [With Diagram] ... ... ... ... 48 



Art. VII. — Eeinforced Concrete, Paper III. By W. H. Warren, 

 wh. Sc, M. Inst. C.E., M. Am. Soc C.E., Challis Professor of Engi- 

 neering, Sydney University ... ... ... 49 



Art. VIII. — On the occurrence of Inclusions of Basic Plutonic 



Eocks in a Dyke near Kiama. By C. A. Sussmilch, f.g.s... 65 



Art. IX. — Note on some simple Models for use in the Teaching of 

 Elementary Crystallography. By W. G. Woolnough, d. Sc. 

 fg.s. (Communicated by Prof. T. W. E. David, b.a., f.r.s.) 70 



Art. X. — Provisional Determination of Astronomical Eefraction 

 from observations made with the Meridian Circle Instrument 

 of the Sydney Observatory. By C. J. Mbrfield, f.r.a.s., 

 Mitglieder der Astronomischen Gesellschaft ... ... ... 76 



Art. XI. — Latitude of the Sydney Observatory. By C. J. Merfield, 



f.r.a.s., Mitglieder der Astronomischen Gesellschaft. ... 93 



