14 F. L. Stilhvell: Monchiqiiite Dykes. 



reef quartz. .Some of this g-okl was exaiiiined microscopically in tliin 

 section, and was found to be in crustified bands along the side of the 

 lava. Hence the lavas are believed to influence the deposition of gold 

 only in so far as they provide drainage channels for the flow of 

 secondary mineralising solutions. 



Literature. 



1. Gregory, J. W. — Contributions to the Bibliography of the Economic 



Geology of Victoria. Reo. Geol. Sur. Vic, Vol. II., Pt. 3. 1907. 



2. Dunn, E. J. — ^Reports on the Bendigo Gold Field, Nos. I. and II. 



Special Rep. Dept. Mines, Vic, 1896. 



3. Howitt, A. W. — Notes on Samples of Rock Collected in the 180 



Mine at Bendigo. Special Rep. Dept. Mines, Vic, 1893. 



4. Miigge, 0.— Neues Jahrb.., Min. Geol., 1894, Vol. II., p. 271. 



5 Rickavd, T. A. — Origin of the Gold Bearing Quartz of the Bendigo 

 Reefs, Australia. Trans. Amer. Inst. Min. Eng., XXII., pp. 

 289-320. 



G. Argall, F. — The Dykes and Reefs of Bendigo. Trans. Amer. Inst. 

 '^Min. Eng., XXIV, pp. 933-942, 1894. 



7. Whitelaw, H. S.— The Northern Bendigo and Raywood Goldtield. 



Rec Geol. Surv. Vic, Bull. No. 12, 1904 



8. Harper, A. — The Natural History of Igneous Rocks. Metheun and 



Co., p. 12. 



9. Maclaren, J. Malcolm.— Gold, its Geological Occurrence and Geo- 



graphical Distribution, p. 367. 



10. Chapman, F., and Thiele, A. 0.— On a Limburgite Rock Occurr- 



ing as a Plug at Balwyn, near Doncaster. Proc Roy. Soc Vic, 

 Vol. XXIV. (new series), Part I., p. 124. 



11. E. W. Skeats and H. S. Summers. — ^The Geology and Petrology 



of the Macedon District. Bull. 24, Geol. Surv. of Victoria (in the 

 press). 



DESCRIPTION OF PLATE I. 



Fig. 1. Mt)nchiquite ; 318-foot level, Central Bed, White and Blue 



Mine, Bendigo. x 35. 

 Pig_ 2. — Kersantite ; One Tree Hill Mine, Bendigo. x 2'). 



