256 (i- B. Priich(ii-d: 



ing to glacial conditions, though he clearly states that he found 

 no glacially marked stones. To quote his own remarks, we may 

 refer to the following paragraph^ : — 



" The character of the conglomerate beds before mentioned 

 near Darley, and on the Wild Duck Creek, is such as almost to 

 preclude the supposition of their being due to purely aqueous 

 transport and deposition. It is, however, very suggestive of 

 the results likely to be produced by marine glacial transport; 

 and the mixture of coarse and fine, angular and waterworn, 

 material, much of which has clearly been derived from distant 

 sources, would also favour this supposition. Grooved or ice- 

 scratched pebbles or rock-fragments have, however, not yet 

 been observed." 



Since that time innumerable glaciated stones of all sorts and 

 sizes have been gathered by many different geologists and their 

 mode of origin proved up to the hilt. 



For information in this direction various papers by Messrs. 

 Sweet and Brittlebank, Officer and Balfour, Dunn, David, 

 and others, may be consulted. 



This glacial material has become important from an economic 

 point of view, for in the course of ages much of it has been 

 cut out by river action, and as a consequence, washed, bleached 

 and sorted into something like regular sizes. Thus on the 

 flanks of Bald Hill, Darley, we can see fine white clay beds, 

 white sandy clays, grits and coarse gravels mainly composed 

 of the more durable materials such as quartz, jasper and 

 quartzite. 



On this deposit a very important industry has arisen in the 

 manufacture of fire-bricks, fire-tiles, retorts, and many other 

 things ; and this work has been carried out in such a thorough 

 and painstaking manner that the results are most excellent and 

 satisfactory. The Darley Fire-Brick Company has gone ahead 

 by leaps and bounds solely on the quality of the articles pro- 

 duced by them, and the care and attention exercised in their 

 production. No doubt this will be a permanent undertaking of 

 high commercial value to the State generally. 



1 Sflvvvn : Kxhiliition Kssa.\s, Lscid. I'Fiys. Geol. and (.ieol. of Vic-toria, j). 10. 



