PROCEEDINGS. 337 



transparent slices of rocks and minerals on to the screen. Six 

 Petrological Microscopes with transparent sections of minerals 

 and rocks, the latter being of eruptive origin and occurring in the 

 neighbourhood of Sydney, chiefly at Pennant Hills and at Prospect, 

 near Parramatta. 



The University Hall. 

 Department of Mines and Agriculture — Apparatus in use 

 at the Department for milling small quantities of experimental 

 wheats. Exhibits showing different varieties of grain grown in 

 the Colony, and their milling products. Exhibits illustrating 

 different points in the testing of flours <fcc. Farinometer for test- 

 ing gluten. Strength Burette, &c. Electriating apparatus for 

 separating mechanical constituents of soils. — (F. B. Guthrie, f.c.s.) 

 Samples of strata from the Artesian Bores ; samples of Artesian 

 casing ; photographs of Artesian Bores in New South Wales and 

 Queensland — (J. W. Boultbee, Superintendent of Public Water- 

 ing Places and Artesian Boring Branch). A collection of 

 interesting mineralogical and pakeontological specimens in show 

 case. — (E. F. Pittman, Government Geologist). 



Roads and Bridges Department — Models : — Monier Arch,, 

 30 ft. span ; Hinged Lift Bridge (Edgell and Holden's Patent);, 

 Pock Drill with self-acting feed ; 90 ft. Standard Timber Truss 

 Bridge (previous to 1892); ditto (1892); 160 ft. Standard Com- 

 posite Truss Bridge — (R. R. P. Hickson, M. Inst. C.E., Engineer-in- 

 Chief). Specimens of shells and pallets of Teredo navalis and 

 timber destroyed by seaworms — (E. M. de Burgh, Assoc. M.inst.c.E.), 



Harbours and Rivers Department — Collection of Photographs 

 — (C. W. Darley, m. Inst. C.E., Engineer-in-Chief. 



Government Printing Office — Photographs : — Panorama of 

 Harbour and City of Sydney ; Sydney Harbour, from Tower of 

 Post Office ; the General Post Office, and numerous others ;. 

 one frame showing the various stages of Bookbinding as executed 

 at the Government Printing Office; five frames showing specimens, 

 (by Chromo-lithography) of Australian flora. Toned Bromides ;— 



V— Dec. 5, 1894. 



