XX11. ABSTRACT OF PROCEEDINGS. 



the pressure, he had made one calculation in the matter 

 and at the deepest part the rock pressure is practically the 

 same as the hydraulic pressure; therefore, any great 

 strength of lining would he thought be quite unnecessary. 



Mr. A. D. Olle, f.c.s., seconded Mr. Cardew's motion, 

 which was carried. It was arranged that Mr. Keele would 

 be given an opportunity at a subsequent meeting to reply 

 to the discussion. 



exhibit: 



His Honour Judge Docker exhibited an interesting set 

 of stereoscopic views prepared from photographs he had 

 taken at the Cataract and Oordeaux Rivers. 



SEPTEMBER 5th, 1917. 



The three hundred and ninety-second General Monthly 

 Meeting of the Royal Society of New South Wales was held 

 at the Society's House, 5 Elizabeth Street, Sydney, at 8 p.m» 



Dr. J. B. Gleland, President, in the Chair. 

 Thirty-one members and one visitor were present. 



The minutes of the preceding meeting were read and 

 confirmed. 



The certificate of one candidate for admission as an 

 ordinary member was read for the first time. 



Six volumes, seventy parts and seven reports were laid 

 upon the table. 



The death was announced of Mr. Edmund Milne, wha 

 was elected a member of the Society in 1916. 



The President announced that on the 20th September, 

 Professor A. Anstruther Lawson would deliver a popular 

 science lecture on "Heredity and the Laws of Mendel." 



Mr. J. B. Henson, Assoc, m. inst. c.B., then contributed to 

 the discussion on Mr. Keele's paper, " The Sydney Water 

 Supply." He said : — A supplementary supply of water for 



