BY H. C. RICHARDS. 137 



State. The most extensive use in any one building is in the 

 recently erected Union Bank (1916), where it is used as the 

 super-structure on Footscray basalt which extends to the 

 first cornice. Not only were both these stones brought into 

 this State but they were already dressed, practices which 

 naturally do not commend themselves to people here. 



A comparison of this sandstone with some of our 

 sandstones might be made with advantage. 



With respect to Aveathering properties, as far as can be 

 seen up to the present, the sandstone from Jeay"s quarry- at 

 Goodna, Murphy's Creek, the brown stone and pink stone 

 quarries at Helidon. and Yan Gan compare very faAourabh' 

 indeed. 



As regards appearance, each of the sandstones mentioned 

 has naturally a warmer appearance as the deej)er yellow- 

 brown colour in the Sydney sandstone is usually produced 

 by artificial oxidation of the naturally-occurring iron 

 carbonate through the stone. The stone naturally darkens 

 on exposure to the weather, but it does not take on such a 

 warm brown tint as our brown sandstones. 



The more important structures in which this stone has 

 been used in Brisbane are the Town Hall (1864) up to the 

 .first cornice, the Commercial Banking Co. of Sydnej" (1866- 

 67) up to the first cornice, the Commercial Bank of Australia 

 (1877), the National Mutual Insurance Co., the external sand- 

 stone facings of St. John's Anglican Cathedral (1909-11), the 

 facings of the New Zealand Insurance Co., the front of the 

 E.S. & A. Bank (1913) above the first cornice, the facings 

 of Parbury House (1915), the Union Bank (1916) above 

 the first cornice, and the Queensland Trustees. 



TUFF. 



The Brisbane tuff, which is more usualh' called 

 " Porphyry " in the trade, is a stone which has been exten- 

 sively used over a long period. 



It is an in\aluable materia] to Brisbane owing to its 

 utilisation for road-making, kerbing, and building purposes. 

 It occurs along a belt stretching for several miles through 

 Brisbane in a north and south direction and has an average 

 width of perhaps a half-mile. The more important quarries 



