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triphenylmethyl and some derivatives of triphenylmethane :

DIARY OF SOCIETIES. Jules Schmidlin.—The preparation of iodide of gold by the

THURSDAY, NOVEMBER 17. action of iodine on gold : Fernand Meyer. The iodide Aul

ROYAL SOCIETY, at 4.30.-Air Resistance Encountered by Projectiles at can be obtained by the direct action of iodine upon gold at Velocities up to 4500 Feet per Second : A. Mallock, F.R.S.-- Theory of temperatures between 50° and 100°. Below 50°, or above Amphoteric Electrolytes. Part 11. : Prof. J. Walker, F.R.S.--Enhanced

Lines of Titanium, Iron, and Chromium in the Fraunhoferic Spectrum: 200°, there is no action. In the presence of water in a closed

Sir Norman Lockyer, K.C.B., F.R.S., and F. E. Baxandall.-On the vessel iodine gives with gold the same aurous iodide.-On Group IV. Lines of Silicium: Sir Norman Lockyer, K.C.B., FRS, a yttrium earth near to gadolinium : G. Urbain. An and F. E. Baxandall.-The Electrical Conductivity and other Properties

of Sodium Hydroxide in Aqueous Solution, as Elucidating the Mechan. attempt to isolate an element characterised by the band

The 1=488.-On B-bromobutyric acid : M. Lespieau.

ism of Conduction : W. R. Bousfield, K.C., M.P., and Dr. T. Martin

Lowry.--On the Wetting of Cotton by Water and by Water Vapour : amide of this acid is obtained by saturating allyl cyanide Prof. D. Orme Masson, F.R.S. with hydrobromic acid in the cold. A crystalline mass LINNEAN SOCIETY, at 8. --On the Structure of the Stems of Plants : Loid

Avebury, F.R.S. -Observations on Undescribed or Little Known Species separates, which, when dissolved in concentrated hydro

of Membracidæ : G. B. Buckton, F.R.S. bromic acid solution, deposits white crystals of the amide.

FRIDAY, NOVEMBER 18. The oxidation of acetol : André Kling.-On the formation

INSTITUTION OF MECHANICAL ENGINEERS, at 8.-Impact Tests on the of formaldehyde during the combustion of tobacco : A.

Wrought Steels of Commerce : A. E. Seaton and A. Jude. Trillat. The experimental results show that aldehydes are EPIDEMIOLOGICAL SOCIETY, at 8.30.-The Inauguratory Address on the

Epidemiological Aspects of Industrial Diseases : the President, Dr. formed during the combustion of tobacco, notably form

Whitelegge, C.B. aldehydes. The toxic effects, however, are modified by the

TUESDAY, NOVEMBER 22. fact that these aldehydes immediately combine with the INSTITUTION OF CIVIL ENGINEERS, at 8.-Distribution of Electrical nitrogenous bases given off at the same time.-On the Energy : J. F. C. Snell. germination of the spores of Atrichum undulatum and

WEDNESDAY, NOVEMBER 23. Hypnum velutinum, and on their nutrition in sterilised Geological Society, at 8.-On an Ossiferous Cavern of Pleistocene Age liquid media : Paul Becquerel.—On the development of

at Hoe Grange Quarry, Longcliffe, near Brassington, Derbyshire :

H. H. Arnold-Bemrose and E. T. Newton, F.RS. –The Superficial the kidney and Leydig's gland in the Elasmobranchs :

Deposits and Pre-Glacial Valleys of the Northumberland and Durham 1. Borcea. The kidney of the Elasmobranchs has the Coalfield: D. Woolacott. same value as that of the higher vertebrates.-The influence FARADAY SOCIETY, at 8.-Recent Investigations Bearing on the Theory

of Electrolytic Dissociation Prof. L. Kahlenberg.-- The Potential of of the feeding on the length of the intestine of the larvæ

the Hydrogen-Oxygen Cell : F. J. Brislee. of Rana esculenta : Émile Yung.–On an infectious disease

Society Op Arts, at 8.-The Systematic Promotion of British Trade : of horses, with alterations in the bones, observed at Ben. H. Morgan. Madagascar : MM. Charon and Thiroux.-On the general

THURSDAY, NOVEMBER 24.

Royal SCCIETY, at 4.30. structure of the Tyrolese Alps west of the Brenner Railway : Pierre Termier.-Modifications undergone by the nutritive exchanges in skin disease : A. Desgrez and J. Ayrignac.

CONTENTS.

PAGE
The Theory of Continuous Groups. By H. F. B.
New South Wales.

49

Technological Chemistry. By C. Simmonds . 50 Royal Society, September 7.-Mr. C. O. Burge, president, The Transpiration of Plants. By F. D.

51 in the chair.-Notes on the theory and practice of concrete

Our Book Sbelf :iron constructions : F. M. Gummow. The author outlined Miall : “ House, Garden, and Field; a Collection of the theory from the present standpoint of scientific research,

Short Nature Studies."-R. L.

52 and after reviewing the principal applications, concluded

Hand : “Ideals of Science and Faith"

52 his paper by giving particulars of a test of concrete-iron Beth : “ Die orientalische Christenheit der Mittelmeerplate beams, carried out on a large scale.-Further experi

lände"

53 ments on the strength and elasticity of reinforced concrete : “ Tales of Sutton Town and Chase, with other Tales Prof. W. H. Warren. The author stated that the paper

and some Sketches”

53 consisted of an experimental investigation of the physical

Dewar: “The Glamour of the Earth "

53 properties of Portland cement mortars and concrete when

Stark : “ Jahrbuch der Radioaktivität und Elektronik"

53 reinforced with steel.

Letters to the Editor :

What is Brandy ?—Dr. V. H. Veley, F.R.S.; Dr. Linnean Society, September 28.-Dr. T. Storie Dixson,

S. Arch. Vasey .

53 president, in the chair.-Monograph of the Australian The Origin of Life.—Dr. F. J. Allen

54 Cicadidæ : Dr. F. W. Goding and W. W. Froggatt. Change in the Colour of Moss Agates.-C. Simmonds. 54 Descriptions of all the Cicadidæ attributed to Australia, Chemical Analysis for Beginners.-F. Southerden 54 amounting to 115 species, comprised in 21 genera, are Misuse of Words and Phrases.--T. B. S. given. In connection with the geographical distribution Reason in Dogs. — Arthur J. Hawkes .

54 of the species it may be mentioned that though many are Occurrence of a Tropical Form of Stick-Insect in strictly confined to the coastal forests of eastern Australia,

Devonshire.-Prof. Robert O. Cunningham 55 others are found sporadically over a very large area, re- A Probable Variable of the Algol Type.-J. E. Gore 55 appearing in widely separated districts if the suitable class The Previous Examination at Cambridge

55 of country presents itself. For example, Tibicen willsi, The Exploration of the Transvaal. (Illustrated.) By Dist., described from Rockhampton, ranges up the Queens- Prof. Grenville A. J. Cole

55 land coast to Townsville, occurs also at Bourke, N.S.W., and Our Museums. (Illustrated.) By R. F. S.

57 reappears at King's Sound, N.W.A. Indo-Malayan affinity Dr. Frank McClean, F.R.S. Bý W. J. S. L.

58 is indicated by the occurrence of the genera Gæana and Notes

59 Huechys.-Notes on Neuroptera, with descriptions of new Our Astronomical Column:species : W. W. Froggatt.-Ngarrabul and other aboriginal Encke's Comet (1904 6).

63 tribes, part ii., distribution of the tribes : J. MacPherson. Deslandres's Formula for the Lines in the Oxygen The distribution of twenty-four tribes in north-east New

Band Series . South Wales and South Queensland, in accordance with the Annual Report of the Cape Observatory languages spoken and as gleaned from Ngarrabul sources The Transition from Primary to Secondary Spectra . of information, is discussed and mapped.-- Notes on the New Buildings of the University of Liverpool. (Illusnative flora of New South Wales, part i., the Tumbarumba trated.) and Tumut districts: R. H. Cambage. These notes Prof. Mendeléeff on the Chemical Elements

65 comprise observations on the conspicuous vegetation of the Welsh Conference on the Training of Teachers country between Wagga, Tumbarumba, Tumut, and Therapeutic Bacterial Inoculation. By B. Gundagai during the drought of 1903, and serve to show Palæozoic Seed Plants. By E. A. N. Arber the striking differences between the fora of the low country Anthropological Notes round Wagga (600 feet above sea-level) and that of Laurel University and educational Intelligence Hill or Bago, near Tumbarumba (about 3300 feet), where Societies and Academies

70 the vegetation presents a recognisable Tasmanian facies. Diary of Societies ..

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