99 



Precidus serj)cntine from Byng is shown in case 124. It is 

 found in thin layers only, and would be suitable for small worii 

 only — if at all. 



Grreen porphyry from Cowra. A good stone, but very expensive Porphyry, 

 to work on account of its toughness. Case 129. 



Prom the Hawkesbury Series, in cases 129 and 133, Large Sandstone, 

 dressed cubes from the following quarries near Sydney: — 

 Parramatta, Hunter's Hill, Pyrmont, Eandwick, Mosman. 



From the Hunter Eiver District (Carboniferous and Permo- 

 Carboniferous Formations). In cases 133 and 135 are large 

 dressed cubes from quarries at the following places : — Ruther- 

 ford, East Maitland, Morpeth, Clareiice Town, Eavensfield, 

 Muswellbrook, Paterson, Lambton. 



Serving as a base to a column of Bingera serpentine in case 

 129, is a cut block of the grey AVaratah sandstone — a beautiful 

 stone. 



Grabo Island, case 124. — A red granite similar to that from Granite. 

 Peterhead (Scotland). 



Trial Bay. — A large polished block to the left of the entrance. 

 A pale pink granite, exceptionally easy to polish. 



Moruya. — Polished and dressed blocks in cases 129 and 133. 

 A grey granite with moonstone felspar.* 



Garlara (Tiimut District). — A pretty grey granite, taking a 

 good polish and working well. The markings are very uniform. 



Bowral. — A grey rock serving equally well in the rough or " Trachyte." t 

 polished. Case 133. 



* May be seen in the columns of the G.P.O., Sydnej'. 



t Properly speakinpf, this rock is a syenite. It may he seen in many Sydney buildings, 

 notably that of the New York Equitable Life Assurance Company, Georg-e-street. 



