Obsidian Bombs in Australia. 39 



also recordecP from a post-pliocene drift at Spring Creek, near 

 Daylesford. Obsidian is said- to occur at Ararat and Retreat 

 Creek, Ingleby, but no particulars are given. Specimens in the 

 Warrnambool Museum are labelled from Mount Rouse, Grass- 

 mere, and from Mepunga two feet from the surface. Mr. R. G. 

 Johns, of Ballarat, states that they have been found on the 

 surface at Warrnan^bool, Balmoral, Harrow, and Edenhope, in 

 the Western District ; in the auriferous drift near Ararat 

 sixteen feet from the surface, and at Rokewood thirty feet from 

 the surface ; also in the shallow workings of the Hard Hills, 

 near Buninyong. He reports the discovery quite recently of an 

 obsidian ring, which was found on bedrock sixteen feet from the 

 surface, at Rocky Point, about eight miles from Ararat. Mr. 

 T. S. Hart, of the Ballarat School of Mines, has kindly given me 

 the following list of localities from which the specimens (all of 

 the characteristic button shape) in their Museum were obtained : 

 Telangatuk, north of Balmoral ; Glenelg River ; Nerring, near 

 Beaufort, found in white clay twelve feet from the surface ; 

 Byaduk Creek, Hamilton ; and Bolwarrah, Moorabool River. 

 Mr. G. W. Card informs me that they occur at Uralla, N.S.W., 

 in shallow leads and scattered over the surface, but that, 

 although said to have been found in deep leads there, no proof 

 of their so occurring could be obtained. They are also reported 

 from Thackaringa, Tumbarumba, Cobar District, Majors Creek, 

 (Braidwood), and Broken Hill. In that colony the specimen 

 described by Darwin was found between the rivers Darling and 

 Murray, and those mentioned by the Rev. W. Clarke from the 

 washing-stuff of the Uralla, and one from the Turon River, where 

 it is supposed to have come from a depth of thirty feet in the 

 auriferous wash. One in the Technological Museum is said to 

 have come from INIount Oxley. Mr. R. L. Jack, Government 

 Geologist of Queensland, states that obsidian button-bombs have 

 been reported from the Central (Rockharapton) District. In 

 Messrs. Twelvetrees and Petterd's paper it is stated that they 

 occur in the tin drifts of Thomas Plains (East Tasmania) ; at 

 Long Plains, near Waratah, in an alluvial drift ten feet from 



; Melb. Iiitercol. Exh. Catalogue, 186C. 



' Geol. Survey Progress Report, vol. iii. (1S76), p. 286. 



