CONTENTS. V. 



Proceedings of the Sections — continued. 



Section A — continued. page. 



3. A Form of Green's Theorem. By Evelyn G. Hogg, M.A. . . . . 312 



4. The Influence of the Speed of the « Particle upon the Stopping 



Power of the iledium through which it passes. By W. H. Bragg, 



M.A 318 



*o. The British Gravitation System of Units. By W. R. Jasheson, M.A., 



B.Sc 318 



*6. The Definition of the Co-efficient of Expansion. By W. R. Jamieson, 



M.A., B.Sc 318 



7. The Velocity of Ejection of the Electron from an Ionised Molecule. By 



R. D. Kleeman, B.Sc. 319 



8. Australian Geodesy. By W. Ernest Cooke, M.A., F.R.A.S. . . 319 



9. Our Winter Storms : Whence do they Come ? By W. Ernest Cooke, 



M.A., F.R.A.S 320 



10. Standard Astronomical Work in Australia. By W. Ernest Cooke, 



M.A., F.R.A.S 321 



11. The Phosphorescence of Glass Exposed to Sunlight. By R. C. Yates, 



(Communicated by Professor Bragg, M.A.) . . . . . . 322 



SECTION B.— CHEMISTRY, METALLURGY, AND MINERALOGY. 

 Address by Robert C. Sticht, B.Sc, E.M., President of the Section . . 57 



1. Recent Methods of Rock Analysis. By P. G. Wykeham Bayly, 



A.S.A.S.M 323 



2. The Technical Examination of Boiler Waters. By W. A. Hargreaves, 



M.A., F.I.C., and W. T. Rows 333 



3. The Flash-point of Kerosine. By W. A. Hargreaves, M.A., F.I.C., 



and W. T. Rowe 338 



4. The Analyst and the Commerce Act. By W. A. Hargreaves, M.A., 



F.LC 342 



5. Notes on Fodder Analysis. By J. C. Bbunnich, F.I.C, and Frank 



S.\nTH. B.Sc 343 



6. Detection and Estimation of Formaldehyde in Milk. By J- C. 



Brunnich, F.I.C 348 



7. The Analysis of Malt Extract. By E. S. Richards, B.Sc 350 



8. The Behaviour and Elimination of Certain Impurities in Copper 



Smelting and Refining. By G. C. McMtjbtry, A.R.S.M., 

 A.R.C.SC 353 



9. The Radio-activity of Thorium. By G. J. Gray, B.E., B.Sc 359 



*10. Gold Nuggets from New Guinea Possessing a Concentric Structure. 



By Professor A. Livebsidge, M.A., F.R.S. . . . . . . • . 365 



SECTION C— GEOLOGY. 

 Address by A. Gibb Maitland, F.G.S., President of the Section . . . . 131 



1. Distribution of the Igneous Rocks of New Zealand (with map). By 



P. Marshall, M.A., D.Sc 367 



2. The Relationship of the Genus Girvandla, and its Occurrence in the 



Silurian Limestones of Victoria (with three plates). By Fredck. 



Chapman, A.L.S., F.R.M.S 377 



*3. Notes on the Schistose Rocks East of the Mount Lofty Ranges. By 



W. G. WooLNOUGH, D.Sc 386 



*4. Rock Phosphates in the Hundred of Bright, South Australia. By 



W. G. WooLNouGH, D.Sc 386 



5. Notes on the Geology of the You Yangs, Victoria (with three plates). 



By Ernest W. Skeats, D.Sc, F.G.S 387 



*6. The Association of Laminated Clays, Shales, and Slates with Glacial 



Deposits : their Significance and Chronological Value. By D. 



Mawson, B.E., B.Sc 396 



