4 WILLIAM M. HAMLET. 



12. Discovery of Glaciated Boulders at base of Permo- 

 Carboniferous System, Lochinvar, N. S. Wales, by Professor 

 T. W. E. David, b.a., f.g.s. 



13. On N. S. Wales Copper Ores Containing Iodine, by Arthur 

 Dieseldorff, m.e., Freiberg, Baden, Germany. (Communicated 

 by A. J. Bensusan, Assoc, r.s.m., f.c.s.). 



14. On the Darwinias of Port Jackson and their Essentials Oils, 

 by R. T. Baker, f.l.s., Curator, and H. G. Smith, f.c.s., 

 Assistant Curator, Technological Museum, Sydney. 



15. Orbit Elements Comet I., 1899 (Swift), by C. J.Merfield,F.R.A.s. 



16. On the composition of N. S. Wales Labradorite and Topazes 

 with a comparison of methods for the estimation of Fluorine, 

 by G. Harker, b. Sc. (Communicated by Professor Liversidge, 



M.A., LL.D., F.R.S.) 



17. On a remarkable increase of temperature after dark at Seven 

 Oaks, Macleay River, by Hugh Charles Kiddle, f.r. Met. soc, 

 Public School, Seven Oaks, Macleay River. 



18. Record of rock temperatures at Sydney Harbour Colliery, 

 Birthday Shaft, Balmain, Sydney, N. S. Wales, by J. L. 0. 

 Rae, E. F. Pittman, Assoc, r.s.m. and Professor T. W. E. 

 David, b.a., f.g.s. 



19. Note on Edible Earth from Fiji, by the Hon. B. G. Corney, 

 m.d., Professor T. W. E. David, b.a., f.g.s., and F. B. 

 Guthrie, f.c.s. 



Sectional Meetings. — The Engineering Section held seven 

 meetings, at which the average attendance of members and 

 vistors was 27 ; the following papers were read and discussed : — 



1. The Annual Address to the Engineering Section, by Norman 



Selfe, M.Inst. C.E. 



2. The Sewerage Systems of North Sydney and Double Bay, by 



J. Davis, M.Inst. C.E. 



3. The Manufacture of Monier Pipes, by F. M. Gummow. 



4. Lecture on Liquid Air, by Prof essor Liversidge, m.a., ll.d.,f.r.s. 



5. " Le Pont Vierendeel" by J. I. Haycroft, M. Inst. C.E.I. 



