4 T. W. E. DAVID. 



Professor of Physics at the University of Sydney) Professor 

 J. P. Hill and others of our former colleagues in so success- 

 fully pressing the invitation of the science bodies of Aus- 

 tralia to the British Association for the Advancement of 

 Science to come over and visit us in 1914. It was also 

 obvious from the names mentioned of the intending visitors 

 that the British Association would be well and worthily 

 represented on what we all hope will be a happy and helpful 

 meeting between the old world and the new. 



II— Notes on some of the Chief Tectonic Lines of 

 Australia. 



The relief model of Australia reproduced on Plate 1, and 

 the lines of section which accompany it, represent some of 

 the chief structural trend lines which have presented 

 themselves to one's notice up to the present. Suess in 

 his magnificent and monumental work, " Das Antlitz der 

 Erde," has already furnished a masterly sketch of some of 

 the main trend lines of Australasia. 1 



The late Captain F. W. Hutton, f.r.s., lias furnished an 

 excellent and succint account of the chief structural fea- 

 tures of New Zealand. 2 The Horn Expedition to Central 

 Australia threw much light on its dominant trend lines. 3 

 In 1893, in a Presidential Address to the Linnean Society, 

 I attempted to sketch from somewhat meagre data the 

 then state of our knowledge of the leading trend lines of 

 Australia. 4 Professor Gregory, f.r.s., has indicated some 

 of the chief trend lines of Victoria. 5 Mr. W. H. Twelve- 

 trees, f.g-.s., the Government Geologist of Tasmania and 



1 Suess, The Face of the Earth s Translation by Hertha, B. C. Sollas 

 and W. J. Sollas, Vol. n, pp. 149-164; and Vol. iv, pp. 301 - 321 and 501. 



2 Q. J.G.S., May, 1885, Sketch of the Geology of New Zealand, by Capt. 

 F. W. Hutton, f.g.s., pp. 191 - 220, figs. 1-4. 



3 Report of the Horn Exploring Expedition in Central Australia, 

 Geology by Prof. Ralph Tate and J. A. Watt, b.a., b.sc, pt. 3, pp. 1-81 



* Proc. Linn. Soc, 1894, Vol. vin, Ser. 2, pp. 540 - 607, pis. xxvii, xxviii. 

 ' Geography of Victoria, Whit combe and Tombs. By Professor J. W. 

 Gregory, f.r.s. 



