98 Armitage, Country about West Essendon. l^^%e f ^*^ 



i6. Geikie, Sir A. — Text-Book of Geology, third edition (1893), 



P- 355- 



17. Hatch, F. H., and Corstorphine, G. S. — The Geology of 



South Africa, second edition (1909), p. 331. 



18. Murray, R. A. F. — Victoria : Geology and Physical Geo- 



graphy (1887), p. 106. 



19. Hall, T. S., and Pritchard, G. B. — The Older Tertiaries 



of Maude, &c. Proc. Roy. Soc. Vic, vol. vii. (New Series, 

 1895), p. 192. 



20. Irving, R. D., and Van Hise, C. R. — On Secondary Enlarge- 



ments of Mineral Fragments in Certain Rocks. Bull. 

 U.S. Geol. Surv., Bull. No. 8 (1884), p. 20. 



21. Newbold, Lieut. — On the Geology of Egypt. Quart. Jotirn. 



Geol. Soc, vol. iv. (1848), p. 336. 



22. Whitaker, W. — The Geology of London. Memoirs of the 



Geol. Surv. of England and Wales, vol. i. (1889), p. 500. 



23. Pritchard, G. B.— Eocene Deposits of Moonee Ponds. 



Vict. Nat., vol. xviii.. No. 4 (August, 1901), p. 61. 



Explanation of Plates. 



Plate ix. — Fig. i. — Photo- micrograph of thin slice of Older Basalt, from near 

 river-level, just north of the Sand Pits. Ordinary light. x 30 diameters. See 

 Petrographical Note No. i. 



Plate ix. — Fig. 2. — Photo-micrograph of thin slice of Newer Basalt, from 

 surface of outlier east of the Sand Pits. Two of the broad tabulate felspar 

 crystals are shown. The large dark patches are steam vesicles. Polarized light. 

 X 25 diam.eters. See Petrographical Note No. 2. 



Plate X. — Fig. i. — Photo-micrograph of thin slice of Greywacke, from cliff- 

 face north of Horseshoe Bend. The extremely fine character of the ingredients 

 of the rock is shown. Ordinary light. x 35 diameters. See Petrographical 

 Note No. 3. 



Plate x. — Fig. 2. — Photo-micrograph of thin slice of Quartzite, from spur 

 south of the Sand Pits. The mesh of dark-coloured cementing material is shown. 

 Ordinary light. x 8 diameters. See Petrographical Note No. 4. 



Bird Day. — This movement, which was taken u|) with great 

 enthusiasm last year, will, it is expected, be carried out with 

 even better results this year. The day selected is Friday, 28th 

 October, and Mr. J. A. Leach, M.Sc, Inspector of Schools, 

 Education Department, will be pleased to have the names of 

 those who are willing to assist by giving brief addresses or 

 demonstrations at the schools as early as possible, so that the 

 details of the arrangements can be completed. 



The Nallodee. — A new animal belonging to the native cat 

 tribe was lately discovered in a spinifex desert out east of the 

 Pilbarra district. Western Australia, by an exploring party. It 

 lives in burrows, which have several entrances and contain a 



