580 president's address. 



near Hyde Park, are composed, comes from Moruya. A more 

 beautiful granite containing large crystals of Adularia Felspar is 

 quarried at Montague Island. 



Marble occurs in large masses near Wallerawang, Blayney, 

 Marulau, Mudgee, Wellington, Kempsey, Tain worth, and in 

 other localities. It varies in colour from white, grey, and red 

 to black, and has been chiefly quarried for flooring-tiles and 

 mantlopieces. 



The Wianamatta shales and the shale beds in the Hawkes- 

 bury series and in the Coal Measures, afford good material 

 in great abundance for almost all kinds of brick and pottery 

 making. 



Infusorial Earth. 



A large deposit of infusorial earth of Tertiary age occurs near 

 liarraba ; and another deposit of better quality has been found 

 by Mr. W. L. Gipps near the Warrumbungle Mountains. This 

 earth is not of local commercial value at present, but will pro- 

 bably be in demand in the future for employment in the manu- 

 facture of explosives. 



Artesian Wells. 



Another of our natural resources, and one which will prove 

 of immense benefit to a large portion of this colony and of the 

 adjoining colonies of Queensland and South Australia, is 

 artesian water. In January 1881 1 had the pleasure of communi- 

 cating to this Society some particulars kindly given to me by 

 one of our members, Mr. H. A. Gilliat, Government Inspector 

 of Tanks, regarding the discovery by Mr. David Brown, 

 Manager of the Killarah Station, of several artesian springs at 

 Wee Wattah and Mulyeo. Soon after this Mr. David Wilson 

 obtained a large supply of good water by sinking and boring 

 to great depths upon several portions of the Dunlop Eun in the 

 same Darling River District. And recently the Government 

 boring party, in charge of Mr. H. Ford, sent out by the Hon. 

 the Minister for Mines to put down a series of bores across the 

 dry country in the north-west portion of the colony, has struck a 

 supply of fresh water which flows from the pipes at a height of 



