Nvtes on A n,*l r< 1 1 ites. . 227 



Fig. 4. Ml. William Goldiield, Grampians, Victoria. 



5. dp. do. do. do. . 



6. In auriferous load 30 ft. below surface, Kokewood, "Vie. 



7. Mt. William (loldfield,. Grampians, Victoria. 



8. Lintons, near Ballarat, Victoria (on surface). 

 !). Mt. William Goldheld, Grampians, Victoria. 



.. 10. Tele's Tear. Kilauea (volcano). Sandwich Islands. 

 ,, 11. do. do. do. do. 



Darwin Glass (Tasmania). 



On comparing this glass with fulgurites from Gfiqualand, West 

 8<>uth Africa, there appears to be more than a cursory resemblance. 

 The high percentage of silica. 89.813, according to Ernest Ludwig, 

 separates it from volcanic glasses, but not from fulgurites, which 

 in some cases have a still higher percentage of silica. The peculiar 

 ropy structure and the highly glazed channels traversing this glass 

 greatly resemble some forms of fulgurites such as the tubes that 

 result where lightning traverses sand. Professor Gregory's sugges- 

 tion in relation to the glassy australites owing their origin to 

 lightning may be quite applicable to the Darwin glass. Mr. Loftus. 

 Hills, M.Sc. in the Tasmanian Geological Survey Record, No. 3, lias 

 given a very complete account of the occurrence of this glass, which 

 lie considers to be of meteoritic origin. 1 ' 



1 Darwin Glass.' Geological .Survey Record, Xo. :<, Tasmania, l!)]f 



