PROCEEDINGS. 307 



Twenty volumes, eighty-one parts, eighteen pamphlets and one 

 large mounted map received as donations since the last meeting, 

 were laid upon the table and acknowledged. 



The Rev. J. Milne Curran, p.g.s., read a paper on the "Micro- 

 scopic structure of Australian Rocks," which was illustrated by 

 slides and photographs of rock sections shown by a projection 

 microscope in connection with a triunial lantern ; rock sections 

 being likewise shown under the microscope. 



After some remarks upon the same by Prof. David, b.a., f.g.s., 

 the President on behalf of the Society, presented the Rev. J. 

 Milne Curran with the Society's Medal and cheque for £25 which 

 had been awarded to him for his valuable paper. 



Prof. Anderson Stuart, m.d., exhibited and described his new 

 instrument for use in explaining the nature of such waves as 

 those of light. 



Rev. J. M. Curran exhibited a new ' Dick and Swift's ' Peno- 

 logical Microscope. 



WEDNESDAY, SEPTEMBER 2, 1891. 



H. C. Russell, b.a., c.m.g., f.r.s., President, in the Chair. 



Forty members and three visitors were present. 



The minutes of the preceding meeting were read and confirmed. 



The President referred briefly to the great loss the Society had 

 sustained by the death of Mr. C. S. Wilkinson, late Government 

 Geologist. 



The certificates of four new candidates were read for the third 

 time, of thirteen for the second time, and of three for the first time. 



The following gentlemen were duly elected ordinary members 

 of the Society : — 



Parr, Clinton Coleridge, B.Sc; Sydney. 



Grimshaw, James Walter, Assoc, m. Inst, c.e., m.i. Mech. e.; Sydney. 

 Parkinson, Henry W., c.e. ; Berry, N.S. Wales. 

 Smith, George Francis, m.r.c.s. Eng., l.r.c.p. Loud.; Hamil- 

 ton, New South Wales. 



