334 PROCEEDINGS. 



2. " The Interpretation of Cement Analyses, including a new 



method of recording results," by W. M. Hamlet, f.c.s., f.i.c. 



A discussion ensued in which the following gentlemen took 

 part, viz.: — Prof. Threlfall, Messrs. W. A. Dixon, F. B. Gipps, 

 C. W. Darley, Prof. Liversidge, and the Author. 



3. "A Perlitic Pitchstone from Tweed River, with remarks on 



the so-called perlitic cracks in Quartz," by W. F. Smeeth, 



M.A., A.R.S.M. 



4. " A New Map showing Average Monthly Rainfall," by H. 0. 



Russell, b.a., c.m.g., f.r.s. 



5. " Green-producing Chromogenic Micro-organisms in Wool," by 



Prof. T. P. Anderson-Stuart, m.d. 



Remarks were made by Dr. W. C. Wilkinson and Mr. P. N. 

 Trebeck. 



Exhibits. 

 Rev. J. Milne Curran, f.g.s., exhibited photographs and 

 micro slides of trachytes from spurs of the Warrumbungle Ranges, 

 Coonabarabran. He wished to place on record that there is a 

 widespread distribution of true trachyte in the district named, 

 and in this rock is noted the rare mineral nosean, noted now for 

 the first time in Australia. 



WEDNESDAY, DECEMBER 5, 189J/.. 



A Conversazione was held in the Great Hall of the University 

 under the management of a Committee composed of the Officers 

 and Council of the Society. 



The Hall and approaches were tastefully decorated with ferns, 

 palms and rare pot plants kindly supplied by Mr. Charles Moore, 

 f.l.s., Director of the Botanic Gardens. 



The University grounds were illuminated with Chinese lanterns, 

 thus lighting the way for the guests to visit the Medical School, 

 the Chemical, Geological, Physical, Engineering and Biological 

 Laboratories, in which experiments were conducted by the 

 Professors and their assistants. 



