BY W. N. BENSON. 517 



21. David, T. W. E.— " The Geology of the Hunter River Coal-Measures." 



Memoir No.4. Geol. Surv. N. S. Wales. Also, Pittmann, E. F., 

 Records Geol. Surv. N. S. Wales, Vol. v., pp.26-30. 



22. Andrews, E. C — " Report on the Drake Gold and Copper Field." 



Mineral Resources, Geol. Surv. N. S. Wales, No. 12, 1908, pp.3-11, 

 and the authorities there cited. 



23. Pittmann, E. F.— Ann. Rept. Dept. of Mines N. S. Wales, 1881 (1882), 



p. 142. Also, Card, G. W., and Dun, W. S., "The Diatomaceous 

 Earth Deposits of New South Wales." Rec. Geol. Surv. N. S. 

 Wales, Vol. v., Pt.3, p. 19. 

 2i. Benson, W. N. — " Preliminary Note on the Nepheline-bearing Rocks 

 of the Liverpool and Mount Royal Ranges." Journ. Proc. Roy. 

 Soc. N. S. Wales, 1911, pp. 176-186. 



EXPLANATION OF PLATES XX. -XXI. 

 Plate xx. 

 Geological Map of the Bingara and Tamworth District. 



Plate xxi. 

 Geological Sections across the Bingara, Tamworth, and Nundle District. 



