BY W. N. BENSON. 723 



37. Lacroix, A. — " La MineYalogie de France et ses Colonies." 



38. Benson, W. N. — "The Volcanic Necks of Hornsby and Dundas." 



Journ. Proc. Roy. Soc. N. S. Wales, 1910, p. 509. 



39. Dixon, W. A.— Ann. Kept. Dept. Mines N. S. Wales, 1879. 



40. Flett, J. S., and Hill, J. B. — "The Geology of the Lizard and 



Meneage." Memoirs Geol. Surv. Great Britain, 1912. 



41. Murgoci, G. — Ueber die Einschlusse von Granatvesuvianfels in dem 



Serpentin des Paringu Massifs." Bulletinul de Sciinte, Bukarest. 

 ix. Jahrgang, 1900. 



42. Judd, J. W. — " On some simple Massive Minerals (Crystalline Rocks) 



from India and Australia." Mineralogical Magazine, 1895, p. 63. 



43. Bell, J. M., Marshall, P., and Clarke, E. DeC— " The Geology of 



the Dun Mountain Subdivision." Bull. Geol. Surv. of New Zealand, 

 No.12, 1911, pp.31-35. 



44. Marshall, P. — " Note on the Gabbro of Dun Mountain." Trans. 



N.Z. Inst. , pp. 320-322. Also, "The Geology of the Dun 



Mountain Subdivision." Bull. Geol. Survey of New Zealand, No.12, 

 1911, pp.31-35. 



46. Card, G. W, — "An Eclogite-bearing Breccia from the Bingara Dia- 



mond Fields." Rec. Geol. Surv. N. S. Wales, Vol. vii., p. 39. 

 46- Jevons, Jensen, Sdssmilch, and Taylor. — "Geology and Petrology 

 of the Prospect Intrusion." Journ; Proc. Roy. Soc. N. S. Wales, 

 1911, pp. 445-553. 



47. Carne, J. E. — "The Copper Mining Industry." Geol. Surv. N. S. 



Wales. Mineral Resources, No. 6, pp. 322-6. 



48. White, H. P. — " Chemical Notes on Glaucophane Schists from Aus- 



tralia and New Caledonia." Rec. Geol. Surv. N. S. Wales, Vol. 

 vii., p. 47. 



49. Ransome, F. L. — "The Geology of Angel Island." Bull. Dept. Geol., 



Univ. of California, Vol. i., No. 7, pp. 198-224(1894). 



EXPLANATION OF PLATES XXVII. -XXIX. 

 Plate xxvii. Photomicrographs. 



Fig.l. — Spilite [N.T., 415]; Frenchman's Spur, Nundle ( x 20). 



Fig.2.— Spilite, rapidly chilled [N.T., 31]; Moonlight Hill, Nundle ( x 100). 



Fig. 3. — Dolerite with primary labradorite, and abundant ilmenite [N.T., 

 501]; Red Rock, Munro's Creek, Bowling Alley Point ( x 12). 



Fig. 4. — Albitised dolerite, with spongy felspar [N.T., 327]; Hanging 

 Rock, Nundle ( x22) [polarised light]. 



Fig.5. — Flow-structure in lava [M.B., 233]; Jerry's Creek, Crow Mountain. 



Fig. 6. — Spherulitic rhyolite, with flow-structure [M.B., 1]; pebble in con- 

 glomerates, Rocky Creek ( x 20) [polarised light]. 



