640 



NA TURE 



[October 29, 1903 



will be required to stand the prolonged and severe action 

 of the water in question. — On the elastic radial deform- 

 ations in the rims and arms of flywheels, and their measure- 

 ment by an optical method, by Mr. A. Boyd. In this paper 

 actual measurements of the deflections of the rims during 

 rotation were given, so that the shape of the rim at any 

 speed within the elastic limit of the material could be seen. 

 The flywheels tested were of different design. The curves 

 for a curved armed wheel showed a large inflection between 

 the arms, the maximum deflection being close to the arms. 

 The tests on four armed wheels showed very clearly the great 

 advantage of having the joint along the arms, tiie effect of 

 the joint in a four-armed wheel, jointed along the arms, 

 being in fact almost negligible. — The aboriginal fisheries 

 at Brewarrina, by Mr. R. H. Mathews. 



September 2. — Mr. F. B. Guthrie, president, in the chair. 

 — The following papers were read : — The separation of 

 iron from nickel and cobalt by lead oxide (Field's method), 

 by Mr. T. H. Laby. An inquiry into the accuracy of Field's 

 method, as it has distinct advantages over methods 

 commonly in use, viz. a single precipitation of the iron, 

 and the absence, after the removal of added lead, of all 

 reagents, such as sodium or ammonium salts. Combined 

 with the electrolytic determination of nickel or cobalt, the 

 method becomes rapid. Standard solutions of carefully 

 purified iron, nickel, and cobalt nitrates were prepared. 

 With these solutions twenty-two analyses were made, show- 

 ing a recovery of more than qq per cent, of nickel and 

 cobalt. — Pot experiments to determine the limits of en- 

 durance of different farm-crops for certain injurious sub- 

 stances, part ii., maize, by Messrs. F. B. Guthrie and 

 R. Helms. The authors communicated the results of 

 experiments having for their object the determination of the 

 tolerance of maize for sodium chloride, sodium carbonate, 

 ammonium sulphocyanide, sodium chlorate, and arsenious 

 acid. — Bibliography of Australian lichens, by Mr. E. Cheel. 

 — On the Narraburra meteorite, by Prof. Liversidge, F.R.S. 

 A general account of the characteristics of this metallic 

 meteorite, weighing more than 70 lb., which was discovered 

 in 185!; on the Yeo Yeo Creek, twelve miles east of Temora, 

 N.S. Wales. 



Linnean Society, August 26. — Dr. T. Storie Dixson, presi- 

 dent, in the chair. — Studies in Australian entomology. No. xii. 

 New Carabidae (Panageini, Bembidiini, Platysmatini, Platy- 

 nini, Lebiini, with revisional lists of genera and species, some 

 notes on synonymy, &c.), by Mr. T. G. Sloane. — Revision 

 of the Australian Curculionidae belonging to the subfamily 

 Cryptorhynchides, part vi., by Mr. A. M. Lea. — Notes on 

 Byblis gigantea, Lindl. [N.O. Droseraceae], by Mr. Alex. 

 G. Hamilton. 



DIARY OF SOCIETIES. 



SATURDAY, October 31. 

 Essex Field Club, at 6.30.— Exhibition of a Series of Photographs of 

 Fungi, by means of the Lantern: Mr. Somerville Hastings. — Seed 

 Dispersal : Prof. G. S. Boulger. 



MONDAY, November 2. 



Society of Chemical Industry, at 8.— On the Application of the X-Rays 

 to the Examination of "Safety Fuses": C. Napier Hake.— Scarlet 

 Phosphorus — A New Chemically Active Variety of Red Phosphorus, and 

 its Use in the Manufacture of Matches : Drs. Marquart and Schulz. — 

 New Compound of Phosphorus for the Production of Matches : F. Bale. 

 —Densities of Concentrated N itric Acid at different Temperatures : 

 Prof. V. H. Veley, F.R.S., and J. J. Manley.— On a Comparison of 

 Different Types of Calorimeters : J. S. S. Brame and Wallace A. Cowan. 

 TUESDAY, November 3. 



Zoological Society, at 8.30.— On some New Species of Aquatic 

 Oligochaeta from New Zealand: Prof W. B. Benham.— List of the 

 Mammals collected by Mr. A. Robert at Chapada, Matto Grosso. (The 

 Percy Sladen Expedition to Central Brazil): Oldfield Thomas, F.R.S.— 

 List of the Coleoptera collected by Mr. A. Robert at Chapada, Matto 

 Grosso. (The Percy Sladen Expedition to Central Brazil) : C. J. Gahan 

 and G. J. Arrow. 



WEDNESDAY, November 4. 



Geological Society, at 8.— Metamorphism in the Loch Lomond 

 District: E. H. Cunningham-Craig.— On a New Cave on the Eastern 

 Side of Gibraltar : Henry Dyke Acland. 



Entomological Society, at 8.— On some Aberrations of Lepidoptera : 

 Percy L Lathy. 



Society of Public Analysts, at 8.— On the Salinity of Waters from the 

 Oolites : W. W. Fisher.— Notes on (1) Some Indian Oils ; (2) Differentia- 

 tion of Linseed Oil from Boiled Oils: Dr. J. Lewkowitsch. — Note on the 

 Purification of Hydrochloric Acid and Zinc from Arsenic: Dr. L. T. 

 Thorne and E. H. Jeffers. 



NO. 1774, VOL. 68] 



Royal Geographical Society, at 8.30.— Northern Nigeria: Sir 



Frederick D. Lugard, K.C.M.G. 

 Entomological Society, at 8. 



THURSDAY, November 5. 

 Chemical Society, at 8.— Conductivity of Substances Dissolved in 

 Certain Liquefied Gases. Preliminary Notice : B. D. Steele and 

 D. Mcintosh.— The Reduction of Hydrazoic Acid : W. T. Cooke.— The 

 Behaviour of Metallic Oxides towards Fused Boric Anhydride : C. H. 

 Burgess and A. Holt, Jun.— Some Reactions of Vanadium Tetrachloride: 

 B. _D. Steele.— Studies on Comparative Cryoscopy. Part I. : The Fatty 

 Acids and their Derivatives in Phenol Solution: P. W. Robertson. — 

 The Vapour Pressures of Sulpturic Acid Solutions. Preliminary Note: 



B. C. Burt. — The Viscosity of Liquid Mixtures. Preliminary Note: 

 A. E. Dunstan and W. H. C. Jemmett. — Additive Compounds of 

 i Trinitrobenzene and Alkylated Arylamines : H. Hibbert and J. J. Sud- 

 borough.— A Contribution to the Study_ of the Reactions of Hydrogen 

 Peroxide: J. McLachlan. — The Constitution of Certain Silicates: 



C. Simmonds. — Constitution of Ethyl Cyanacetate. Condensation of 



Ethyl Cyanacetate with its Enolic Form: P. Remfry and J. F. Thorpe. 

 — Interaction between Chloric and Hydriodic Acids : J. McCrae.— 

 3:5: -Dichloro-i : i : 2-Trimethyldihydrobenzene. A Correction : A. W. 

 Crossley. — The Estimation of Hydroxylamine : H. O. Jones and F. W. 

 Carpenter. — A Study of the Isomerism and Optical Activity of Quin- 

 quevalent Nitrogen Compounds: H. O. Jones. — The Action of Wate- 

 and Dilute Caustic Soda Solutions on Crystalline and Amorphous 

 Arsenic : W. T. Cooke.— The Union of Carbon Monoxide and Oxygen, 

 and the Drying of Gases by Cooling : A. F. Girvan. 



RoNTGEN Society, at 8.30. —President's Address. 



Linnean Society, at 8.— On the Structure of the Leaves of the Bracken, 

 Pteris aquilina, in relation to environment : L. A. Boodle. — On the Life- 

 history of a New Mi.nophlebus from India, with a Note on that of a 

 Vedalia predaceous upon it ; with Remarks on the Monophlebinae of the 

 Indian Region : E. P. Stebbing. 



FRIDA Y, November 6. 

 Geologists' Association, at 8.— Conversazione at Universitv College. 



CONTENTS. PACK 



Vectors and Rotors. By Prof. George M. Minchin, 



F.R.S 617 



Three Protozoan Articles 618 



Practical Photography 619 



Our Book Shelf:— 



Girard : " L'Evolution comparee des Sables." — 



G. A. J. C 620 



Hammer : " Radium and other Radio-active Sub- 

 stances, with a Consideration of Phosphorescent 

 and Fluorescent Substances. The Properties and 

 Applications of Selenium and the Treatment of 



Disease by the Ultra-violet Light" 621 



" The Experiment Station Record," vol. xiv. — 



A. D. H 621 



Meyer: " Jahrbuch der Ghemie."— J. B .C 621 



Laurie : " Flowering Plants : their Structure and 



Habitat" 621 



Letters to the Editor : — 



Heating Effect of the Radium Emanation. — Prof. E. 



Rutherford, F.R.S. ; Prof. H. T. Barnes ... 622 

 Papers and Procedure at the British Association. — 



Dr. Henry O. Forbes 622 



A Little-known Peculiarity of the Hamadryad Snake. — 



Frank E. Beddard, F.R.S 623 



The New Bishop's Ring.— Dr. A. Lawrence Rotch 623 

 The Nervous System of Anodonta cygtiea.—Os'w&ldi 



H. Latter 623 



Lord Kelvin and bis First Teacher in Natural 



Philosophy 623 



Flow of Steam from Nozzles. By Prof. John Perry, 



F.R.S 624 



Progress of Geological Survey of the United 



Kingdom 625 



Notes, [Illustrated.) 626 



Our Astronomical Column : — 



Astronomical Occurrences in November 630 



Recent Spectrographic Observations of Novae .... 631 



Occupation of a Star by Jupiter 631 



Rotational Velocity of Venus 631 



The Standardisation of Electrical Pressures and 



Frequencies 631 



Geography at the British Association. By A. J. H, . 632 



Engineering at the British Association 633 



Anthropology at the British Association . ... 635 

 University and Educational Intelligence. [Illus- 

 trated.) 638 



Societies and Academies 639 



Diary of Societies 640 



