from a geological point of view on account of the variety of igneous rocks to be found within its borders. The author shows that the low-lying district east of the Blackall and D'Aguilar Ranges, which is composed essentially of Trias-Jura sandstones belonging to the Ipswich Coalmeasures and Tertiary alluvials, has been subject to oscillatory movements of elevation and depression in late Tertiary times. At present elevation is going on, as evidenced by raised beaches at Point Arkwright and elsewhere along the coast. The D'Aguilar Range north of Woodford is made up of Trias-Jura sandstone, but to the south of this point it consists of highly interesting plutonic and metamorphic rocks belonging in part to the Gympie beds, in part to much older formations. The country to the west of the D'Aguilar Range forms a peneplain with an average elevation of 500 feet. The Blackall Range is shown to consist of basalt capping rhyolites and rhyolitic tuffs, and Trias-Jura sandstones. The Maroochy district was a centre of great volcanic activity, rhyolites, andesites, dacites and basalts, as well as extensive areas of tuff and breccia, being here found.-The botany of Howell (Bora Creek), N.S.W. a tin-granite flora: J. H. Maiden. Howell is situated nineteen miles to the south-east of Inverell. The tin-granite area under consideration extends in a two- or three-mile radius from the township. It lies on the western New England slope, at an elevation of about 2500 feet, and is included in E.9, New England County, of the botanical map to be found in the society's Proceedings for 1901 (p. 766). A list of the plants found so far, about 150 species referable to forty-two natural orders, is given. The locality is especially rich in Acacias, A. neriifolia perhaps being most abundant.

DIARY OF SOCIETIES.

THURSDAY, JUNE 14.

ROYAL SOCIETY, at 4.30.-The Experimental Analysis of the Growth of Cancer: Dr. E. F. Bashford, J. A. Murray, and W. H. Bowen. -On the Electrical and Photographic Phenomena manifested by certain Substances that are commonly supposed to be Etiologically Associated with Carci. noma: Dr. W. S. Lazarus-Barlow.-The Bone Marrow; a Cytological Study forming an Introduction to the Normal and Pathological Histology of the Tissue: Dr. W. E. Carnegie Dickson.-On the Relation of the Liver Cells to the Blood Vessels and Lymphatics: Dr. P. T. Herring and Dr. S. Simpson.-Studies on Enzyme Action, Lipase, II.: Prof. H. E. Armstrong, F.R.S., and Dr. E. Ormerod.-Studies of the Processes operative in Solutions, I., The Sucroclastic Action of Acids as Influenced by Salts and Non-electrolytes: R. J. Caldwell.-The Origin of Osmotic Effects: Prof. H. E. Armstrong, F.R.S. MATHEMATICAL SOCIETY, at 5. 30.-Exhibition of Models of Space-filling Solids: W. Bailey.-The Algebra of Apolar Linear Complexes: Dr. H. F. Baker.-Supplementary Note on the Representation of Certain Asymptotic Series as Convergent Continued Fractions: Prof. L. J. Rogers.-On Certain Special Types of Convertible Matrices: J. Brill. INSTITUTION OF MINING ENGINEERS, at 11 a.m.-Address by the President. The Commercial Possibilities of Electric Winding for Main Shafts and Auxiliary Work: W. C. Mountain-Electrically-driven Aircompressors, combined with the working of the Ingersoll-Sergeant Heading-machines, and the subsequent working of the Busty Seam: A. Thompson.-Practical Problems of Machine-mining: Sam Mavor.The Strength of Brazed Joints in Steel Wires: Prof. Henry Louis.Bye-product Coke and the Huessener Bye-product Coke Ovens: J. A. Roelofsen.-Considerations on Deep Mining: George Farmer. SOCIETY OF PUBLIC ANALYSTS, at 8.-An Examination of the Method of Milk Analysis used at the Government Laboratory in connection with Samples referred under the Sale of Food and Drugs Acts: H. D. Richmond and E. H. Miller.-On the Examination of Linseed, Olive and other Oils: R. T. Thomson and H. Dunlop.-On the Composition and Valuation of Oils used for Gas-making Purposes: R. Ross and J. P. Leather. Note on Fractional Distillation by Steam Vapour: H. Hardy and B. Richens.-A New Method for the Estimation of Tartaric Acid: A. C. Chapman and P. Whitteridge.

FRIDAY, JUNE 15. INSTITUTION OF MINING ENGINEERS, at 10. 30 a.m.-Rescue Apparatus and the Experience made therewith at the Courrières Collieries by the German Rescue Party: G. A. Meyer.-A New Apparatus for Rescuework in Mines: W. E. Garforth.-A Rateau Exhaust-steam-driven Three-phase Haulage Plant: William Maurice.-Development of Placer Gold-mining in the Klondike District, Canada: J. B. Tyrrell.-Mining Education: Prof. J. W. Gregory.-The Capacity-current and its Effect on Leakage Indications on Three-phase Electrical Power-service: Sydney F. Walker.-Petroleum Occurrences in the Orange River Colony: A. R Sawyer. NATIONAL ASSOCIATION FOR THE PROMOTION OF TECHNICAL AND SECONDARY EDUCATION, at 3.—Annual General Meeting.

MONDAY, JUNE 18.

ROYAL GEOGRAPHICAL SOCIETY, at 8. 30.-A Fifth Journey in Persia: Major P. Molesworth Sykes, C. M.G.

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