May 29, 19 13] 



NATURE. 



scopic structures of the rocks are dealt with, and the 

 conditions of deposition and stratigraphical relation- 

 ship of the different members of the series discussed. 

 Some structures from the Chipping-Norton Limestone 

 are described, and the reasons given for considering 

 them to be annelid-tubes. A list of fossils is appended. 

 — Dr. J. A. Thomson : The petrology of the Kalgoorlie 

 Goldfield (Western Australia;. The district comprises 

 an area about four miles long by one mile in breadth. 

 Towards the south the auriferous lodes are rich (The 

 Golden MileJ, but in the north they are less productive. 

 Most of the junctions are faulted. In "The Golden 

 Mile" the central feature is a broad dyke of quartz- 

 dolerite, forming a prominent ridge flanked by amphi- 

 bolites and greenstones. The quartz-dolerite is cut by 

 dykes of albite-porphyry. Gold is found in shear- 

 zones, impregnated with sulphides and tellurides, and 

 is most abundant in the lodes in the quartz-dolerite. 

 The sequence of the rocks of Kalgoorlie is discussed. 

 The greenstones, fine amphibolites, and calc-schists 

 are regarded as the old "country-rocks," into which 

 the others are intrusive. The quartz-dolerites, horn- 

 blende-dolerites, and pyroxenites are closely related 

 one to the other. Probably the peridotite group is the 

 early basic facies of the quartz-dolerite series, and the 

 porphyries and porphyrites are regarded as being 

 derived from the same magma. The characteristic 

 of this goldfield is the prevalence of albitisation in the 

 auriferous districts. A consideration of the rock-facies 

 developed from the magma suggests that there is in 

 Kalgoorlie an instance of the production of auriferous 

 lodes by rocks belonging to the same class as the 

 pillow-lavas and their diabases and soda-granite- 

 porphyries. 



Paris. 

 Academy of Sciences, May 19. — M. F. Guyon in the 

 chair. — A. Haller and Edouard Bauer : Monomethyl- 

 camphoroxime, methylcampholenic nitrile,, and methyl- 

 campholenic acid. By the action of sodium amide 

 and methyl iodide upon camphor, a mixture of mono- 

 methylcamphor and dimethylcamphor is obtained. 

 These can be separated by treatment with Crismer's 

 salt (hydroxylamine chlorozincate) ; dimethylcamphor 

 remains unchanged, and can be separated from mono- 

 methylcamphoroxime by fractional distillation. — M. de 

 Forcrand : The condition of water in hydrated salts. 

 The determination of the heat of solution of hydrated 

 salts is suggested as the best means of attacking the 

 problem of the condition of the attached water mole- 

 cules. — M. Andre Blondel was elected a member of 

 the section of free academicians in the place of the late 

 Louis Cailletet. — H. Godard : Observations of the 

 comet 1913a (Schaumasse) made with the 38-cm. 

 equatorial at the Observatory of Bordeaux. Two posi- 

 tions are given for May 16. The comet appeared as 

 a diffuse nebulosity, without nucleus, of 10-5 mag- 

 nitude. — J. Guillaume : Observations of the Schau- 

 masse comet (1913a) made with the equatorial of the. 

 Observatory of Lyons. Two positions are given for 

 May 10 and one for May 11. The comet is described 

 .is circular, bluish, condensed at the centre; mag- 

 nitude about 10-5. — Rodolphe Soreau : A new approxi- 

 mate formula for the length of the ellipse. — Paul 

 Levy : The integration of functional partial differential 

 equations. — M. Moulin : The law of deformation of the 

 flat spiral spring of chronometers. — M. de Sparre : 

 Hammering of the water in pipes formed of sections 

 of different diameter. — C. Tissot : The influence of 

 electrical oscillations on the conductivity of certain 

 fused metallic salts. A layer of certain fused salts 

 (lead and thallium chlorides, cadmium bromide, silver 

 nitrate, chloride, and bromide) in contact with two 

 metallic plates as electrodes becomes conducting when 

 the E.M.F. exceeds a certain limiting value. If the 



NO. 2274, VOL. 91] 



system is now submitted to electrical oscillations of 

 sufficient intensity, the conductivity immediately dis- 

 appears. — Carl Benedicks : The deduction of Planck's 

 law of distribution of energy by the hypothesis of 

 agglomeration. Planck's law can be deduced without 

 the use of the quanta hypothesis. — J. Cliaudier : The 

 variations of magnetic rotatory power in changes of 

 state. — Andre Leaute : The precautions to be taken in 

 the use of resonance in tests of electric cables in- 

 tended for use with high voltages.— R. Y. Picou : 

 Internally excited dynamos.— Camille Matignon : The 

 law of volatility in chemical reactions. The law of 

 Berthollet is given in a generalised form. Any 

 system of solids or non-volatile liquids susceptible of 

 giving rise by a new grouping of atoms to a system 

 containing volatile bodies ought to enter into reaction 

 at a suitable temperature. Thus it has been shown 

 that at a very high temperature aluminium will react 

 with magnesia, the magnesium formed being gaseous. 

 The reduction of barium oxide by silicon is another 

 example. — G. Arrivaut : Study of the system man- 

 ganese-silver. Manganese and silver are capable of 

 forming the combination MnAg, ; experimental 

 evidence on this is given dealing with the melting- 

 point curves, microscopical structure, electromotive 

 forces, and chemical behaviour of various alloys of the 

 two metals. This conclusion is opposed to that pre- 

 viouslv arrived at by G. Hindrichs.— Marcel Compel 

 and Victor Henri : The quantitative study of the 

 absorption of the ultra-violet rays by the alkaloids of 

 the atropine group. Absorption data are given for 

 atropine, apoatropine, and cocaine. — MM. Tafianel and 

 Le Floch : The combustion of gaseous mixtures. An 

 examination of the causes of the lag in the inflamma- 

 tion of combustible mixtures of methane. Moisture 

 was found to be without effect in reducing this_ lag. — 

 J. Aloy and Ch. Rabaut : Benzoyl cyanhydrins of 

 ketones, amides, and the alcohol acids from which 

 they are derived. — E. E. Blaise : The characterisation 

 of the chloro-ketones. The use of the semicarbazones 

 was found to be advantageous for the identification of 

 the chloro-ketones. — Alfred Guillemard : Nature of the 

 optimum osmotic pressure in biological processes. — 

 Jean Daniel : The relations existing between the age 

 of the dicotvledons and the number of successive 

 layers of their secondary woods. Under certain con- 

 ditions of growth the number of concentric layers of 

 secondary wood cannot be distinguished, and the 

 number of years of growth cannot be determined by 

 this means.— C. J. Pitard : The vegetation of Chouia, 

 Morocco. — M. Hirtz : Intensive galvanotherapy with 

 feeble current density. — Louis Roule : Contribution to 

 the study of the biology of the salmon.— L. Bordas : 

 A case of lateral budding in Lumbricus hercitleus. — 

 I . Bounhiol : The reproduction of the Algerian sardine. 

 — Albert Berthelot : Researches on the intestinal flora. 

 The pathogenic action of a microbial association of 

 Proteus vulgaris and Bacillus aminophilus. A study 

 of the symbiosis of these two organisms in vitro leads 

 to the conclusion that the B. aminophilus prevented 

 to some extent the growth of Proteus, but experi- 

 ments in vivo with white rats at once showed that the 

 opposite was the case. Proteus alone, even in large 

 doses, is without apparent influence on rats, butin 

 association with the bacillus above-mentioned, enteritis 

 is rapidly produced. — G. Bechamp : Concerning micro- 

 zyma cr'etae. Remarks on a recent communication 

 by Raphael Dubois.— J. Lesage : Epizootic myocarditis 

 of the sheep. — C. Gerber : Comparison of the hydro- 

 lysing diastases of the latex of Madura aurantiaca 

 withthose of Ficus carica and of Broussonetia papyri- 

 fera. — J. Valid : The value and variation of the tem- 

 perature of the lower portion of the glacier of Mont 

 Blanc. 



