Igneous Rocks of South Western Victoria. 15 



A similar rock, also with opaline enclosures, occurs in a creek 

 at the foot of Den Hills, a few miles to the west. 



IVando Dale. — Between Konong Wotong and Wando Dale 

 there are three successive hills, or, rather, low ranges, over 

 which the road passes. For some time they puzzled me as I 

 drove across them, but a search revealed small outcrojDS of the 

 usual trachytic rocks on all of them. Though the rocks 

 themselves are certainly somewhat decomposed, the porphyritic 

 sanidine crystals, which glisten on their surfaces, are of good 

 size and very perfect. At the top of one of the hills blocks of 

 brick red kaolin have been dug out and attract the attention of 

 the curious. Close to Wando Dale Station the trachytic I'ocks rest 

 directly on the crystalline schists, which are strongly developed 

 in the bed of the River Wando, just below Mr. William 

 Moody's house. On one occasion I travelled in a northerly 

 direction from Phoines, near Carapook, through the romantic 

 rocky scenery of Killiecrankie to Wando Dale, and for nearly 

 the whole distance, about 13 miles, the trachytic rocks were in 

 sight. 



Phoines. — In Ids " Geology and Physical Geography of 

 Victoria," Mr. Reginald Murray refers to a dai^k-colored and 

 dense greenstone which is exposed in the bed of McPherson's 

 Creek. In outward appearance it much resembles the rocks 

 from the neighboring locality of Carapook, though less fissile 

 and perhaps even fresher looking. In microscopic slides it 

 shows much sanidine, generally in lath-shaped, and, rarely, 

 tabular crystals ; the latter, however, when they occur, are 

 exceptionally clear and pellucid. There is also abundance of 

 brown, and a very little green augite. Other minerals may be 

 present, but I have not had time to study this interesting rock 

 as closely as it deserves. 



With regard to the geological age of the trachytoid series of 

 rocks in this district I have little to add to what I said before. 

 The tuff containing Otozaiiiites, mentioned in my former paper, 

 accompanies a dense rock, which, though it certainly contains 

 some sanidine, departs a good deal from the Carapook type of 

 volcanic I'ocks. Its specific gravity, viz., 2*87, is, besides, high 

 for a trachyte, and suggests rather a basalt which may belong to 

 a later date than the more acid rocks herein discussed. The 



