WAY 12 1914 



PRESIDENTIAL ADDRESS. 



By R. H. Oambage, l.s., f.l.s. 



With Plate I. 



[Delivered to the Royal Society of N. 8. Wales, May 7, 1913.'] 



Haying been accorded the honour of addressing you as your 

 President, I purpose on this, the ninety-second anniversary 

 of the existence of our Society, to first refer to a few 

 matters of general interest, and then to offer some observa- 

 tions on the development and distribution of the genus 

 Eucalyptus. 



Necrology. 

 I have first to refer to five of our late members who have 

 been taken from us by the hand of death. 



William Rossbach, Assoc m. inst. c.b., who joined this 

 Society in 1892, was born at Woollahra on 10th August, 

 1862, and died at Waverley on 21st November, 1911. He 

 entered the Public Service as an engineering cadet on 4th 

 July, 1877, and subsequently occupied the positions of Chief 

 Draftsman and Assistant Engineer in the Harbours and 

 Rivers Branch of the Public Works Department. In the 

 latter position he exercised control over the whole of the 

 works and often acted as head of the branch. He was 

 employed under the late Mr. E. O. Moriarty, Engineer-in- 

 Chief for Harbours and Rivers, and the subsequent occupiers 

 of this office, viz.: — Messrs. O. W. Darley, R. R. P. Hickson* 

 T. W. Keele, L. A. B. Wade, and E. M. de Burgh, in the 

 design of such works as the Sydney, Hunter River District, 

 and various Country Towns Water Supplies, the Wharfage 

 and Harbour Improvement Works of Sydney, Newcastle, 

 Port Kembla, and Coastal Rivers. He took a prominent 

 part in the design of the Cataract Dam, and it was on his 

 investigations that Mr. Keele successfully pressed for its 



A— May 7, 1913. 



