1 68 



NA TURE 



[June 13, 1907 



losis in man. The author has studied this skin reaction 

 with animals with results generally confirming those of 

 Von Pirket. In healthy animals (cattle, horses, guinea- 

 pigs) no appreciable skin reaction is produced ; with tuber- 

 culous animals, on the other hand, the skin reaction is 

 well marked. 



DIARY OF SOCIETIES. 



THURSDAY, June is- 



RovAL SociETV, at 4. -ID. -Some Points in the Development of Ophiothrix 

 /ragilis: Prof. K. W. MacBride, F.R.S.— On Certain Phenomena of 

 Inactivation and of Inhibition exhibited by Precipitin .Antisera : ,D. A. 

 Welsh and H. G. Chapman.— The Inhibitory Action upon Subsequent 

 Phagocytosis exerted on Active Normal Serum by Inactive Normal 

 Serum through which Bacilli have been passed : J. C. G. Ledingham. 

 —Miademiin membranaccn, Bertrand ; a New Palitozoic Lycopod with 

 a Seed-like Structure : Miss M. Benson.— On the Identilication of Cbilin 

 by its Physical Constants : Miss I. Sollas. 



Chemical Society (Extra Meeting), at 8. to— Discourse entitled Some 

 Borderline ProbleTis in Botany: Prof J. 11 Farmer, F.R.S. 



Mathematical SociETV, at 1.30.— On Partial Differential Equations of 

 the Second Order : Prof. A. R. Forsyth. 



Institution of Mining Engineers, at 11 a.m. — Improvements re- 

 quired in Inland Navigation : H. R. de Salis.— Byeproduct Col<ing 

 Plant at Clay Cross : W. B. M. Jackson.— Notes on Bye product Coke- 

 ovens, with Special Reference to the Koppers Oven : A. V. Kochs.— Bye. 

 product Cokeovens : P. Schwarz.— Water Supplies by Means of Artesian- 

 bored Tube-wells: H. F. Broadhurst. —Gypsum in Sussex: W. J. 

 Kemp and G. A. Lewis.— The Use of Duplicate Capell Fans : G. M. 



Mathematical Societv, at 5.30.— Note on a Special Set of Classes of 

 Partial Differential Equations of the Second Order : Prof. A. R. Forsyth. 

 —Various Extensions of Abel's Lemma : Prof. T. J. I'A. Biomwich.— 

 On the Number of Repiesintali ins of a Number a- a Sum of 2»- Squares, 

 where zr does not exceed 18 : Dr. J. W. L. Glaish^r.- An Extension of 

 Eisenstein's Law of Reciprocity: Mr. A. E. Western.- On Certain 

 Singular Points of Surfaces: Mr. A. 8. Basset. — The Minimum 

 Necessary Postulates as to a Function to be Defined as Analytic over a 

 Region : Prof. E. B. Elliott. 



FR/DAy,]vsE M. 

 Royal Institution, at g. 



Royal Astronomical Society, at 5. — (i) Note on the Colours of a and 

 o Ceti ; (2) The Relation between Star Colours and Spectra : W. S. 

 Franks.— On the " Owl Nebula," M 97, N.G.C. 1587 : E. E. Barnard.— 

 Ancient Eclipses : P. H. Cowell. — Note on ihe Visual Spectrum of Mira 

 Ce i in December, 1906 ; Rev. A. I, Cor'ie.— The Spectrum of Mira Ceti 

 in December, 1906, as Photographed at Stonyharst College Observatory : 

 Rev. W. Sidgreaves. — Observations of Comets </, f, ^, 1906, from Photo- 

 graphs taken with the 30-inch Reflector of the Thompson Equatorial : 

 Royal Observatory, Greenwich. — PfohahU Papers : Observations of 

 Jupiter: Rev. T. E. R. Phillips.- Descriptio.i of an Equatorial Reflect- 

 ing Telescooe driven by a Hydraulic Ram : T. E. Heath.— The Work of 

 the Mount Wilson Observatory : Prof G. E. Hale. 

 Physical Society, at 8.— Observations on the Electric Arc : W. L. Upson. 

 —The Poulsen .Arc as a Means of Producing Electrical Oscillations (with 

 Experiments) : Dr. I. A. Fleming.— Exhibition of a Direct Reading 

 Conductivity Bridge for Rods: R. Appleyard. 

 Institution op Mining E>igineers. at 10.30 a.m. — The Reform of 

 British Weights and Measures: A. Hopkinson — 1 he '1 hick Coal of 

 Warwickshire: J. T. Browne —De cription of the Ozokerite (Mineral 

 Wax) Mine at Boryslaw, Galicia, Au-tria : D. M. Chambers.— Notes on 

 the Structural Geology of South Africa: Dr. C. Sandberg.— The New 

 kaod Gold-field, Orange River Colony: A. R. Sawyer —Cast-iron 

 Tubbing : What is the Rational Formula Y H. W. G. Halbaum. 

 MONDAY, June 17. 

 RoY»L Geo-.raphical SociErY, at 8.30. — In the Equatorial Forests of 

 Africa : Major P. H. G. Powell-Cotton. 



TUESDAY, June 18. 

 Royal Statistical Society, at 5. 



Zoological Society, at 8.33.— On Growth-forms anH supposed Species in 

 Corals (illustrated hy Lantern Slides) : Dr. F. W. Jones —Notes on 

 Limnocnida from Lake^ Tanganyika and Victoria NyinTa : R. T. 

 Giinlher. — On Lacei'ta ionica, Lehrs, a Variety of Lacerta tany-ka, 

 Pallas: G. A. Boulenger, F.R.S. —On Neotmpical Lycajnidx, with 

 Descriptions of New Species: Hamilton H. Druce.— Descriptions of 

 VtU/tr hvPsehpUrus and a New Fish of the Genus Velifer : C. Tate 

 Kesan— On the Anatomy, Clas^ification, and Systematic Position of the 

 Teleostean Fishes of the Sub-order Halotriognathi : C. Tate Regan.- 

 A Monographic Revision of the Monkeys of the Genus Cercopithecus : 

 R. 1. Pocock. — Notes upon some African Species of the Genus Felis 

 recently exhibited in the Zoological Gardens : R. I. Pocock. 

 WEDNESDAY, }vs% 19. 

 Geological Society, at 8.— The Constitution of the Interior of the 

 Karth as revealed by Earthquakes (Second Coinmuniration) : Some 

 New Light on the Origin of the Oceans; R. 1). Oldham.— (i) 1 he 

 Swansea Earthquake of June 27, 1906; (2) The Ochil Earthquakes of 

 September. 1900, to .\pril, 1907 : Dr. C. Davison. — (i) The Inferior 

 Oolite and Contiguous Deposits of the B.ath-Doulting District ; (;1 The 

 In''enor Oolite and Contiguous Deposits of the District between ihe 

 Rissingtons and Burford : L. Richardon.— The Flora of the Inferior 

 Oolite of Brora (Sutherland) : Dr. M. C. Slopes. 

 Roval MeTEoROLOGiCAL SOCIETY, at 4 30. — Weather and Crops, 1891- 

 1906: F. C. Bayard.— The Relation of the Rainfall to the Depth of 

 Water in a Well at Cirencester, 1903-1906: C. P. YioaVer.— Exhibit : 

 The "Step"" Anemometer, an Instrument designed to obviate the 

 "Sheltering" Error: W. Child.) 



Royal Microscopical Society, at S— Eye-pieces for the Micoscope : 

 E. M. Nelson.— Lecture, illustrated by Lantern. slides, on the Life- 

 history of the Tiger Beetle, Cicimida camptstris : F. Enoch. 

 THURSDAY, ]vtiK so. 



Royal Society, at i.-m.—ProhahU Paptr-s : Bakerian Ixicture, On Ihe 

 Atomic Weight of Radium : Dr. T. E. Thorpe, C.B., F.R.S.— On the 

 Origin of the Gases Evolved by Mineral Springs: Hon. R. J. Strull. 

 F.R.S.— On the Pre-senre of Sulphur in S..me of the Holier Stars: 

 Sir J. Norman Lockyer. KC.B., F.R.S.— The Fluted Spectrum of 

 Titanium Oxide: A. Fowler.— Preliminary Note on a New Method of 

 Measuring Directly Doubli- Refraction in Strained Glass : L. N. G. Filon. 

 — Stu'lies of the Processes Operative in Solutions, 1 1 , 1 he Displacement 

 of Chlorides from Solution by .Alcohol and by Hydrogen Chloride : Prof. 

 H. E. Armstrong, F.R.S, E. V. Evre, and A V Hussey ; III. The 

 Sucroclastic Action of Nitric Acid as Influenced bv Nitrates: R. Whymper ; 

 IV. The Ujdrolysis of Methylic Ar-tat- in Presence of Salts: Prof. 

 H. E. Armstrong and J. A. Watson ; V. The Discrim nation of Hydrates 

 in Solution : Pro''. H. E. Armstrong, F.R.S., and R. J Caldwell. 



Chemical Society, at 8.30. — Some Properties of Radium Emanation : 

 A T. Cameron and Sir W. Ramsay.— The Affinity Constants of Amino. 

 sulphonic Acids as Determined by the Aid of Methyl ' lran,!e : V. H 



Veley. Azo.dcrivatives of r : 3-Diphenylbarbituric Acid. Dynamic 



Isomerism among the Coloured Hydrazones of 1 : 3.Diphenylalloxan : 

 M A Whiteley — A Series of Coloured Diazosalts Derived from p-Amino- 

 acelo-a-naphthalide: G. T. Morgan .ind W. O. Woottun.— (i) Colour 

 and Constitution of Azo.compounds, Part I. ; (2) Colour and Consiitulion 

 of Azo-compounds, Part II.: J. T. Hewitt and H. V. Mitchell.— The 

 Oxidation of Hydrazines by Free Oxygen: F. D. Chattaway.— Calma- 

 tambin, a new Glucoside : F. L. Pyman. — The Decomposition of 

 Hyponitrous Acid in Presence of Mineral Acids : P. C. Ray and A. C. 

 Ganguli —The Chemical Composition of Petroleum from Borneo : 

 H O. Jones and H. A. Wootion.— (1) The Synthesis of Phenonaphlha. 

 cridines. Trimethylphenonaphthacridines ; (2) The Condensation of 

 Aldehydes with Mixtures of a-Naphtholanda-Naphthylamine ; Synthisis 



a— N-a 

 of7-Aryl 1 Dinaphthacridines : A. Senier and P. C. Austin.- 



(i) An Improved Form of Apparatus for the R.ipid Estimation of Sulphates 

 and Salts of Barium ; (2) The Determination of Sugar by Fehling's 

 Solution : W. R. Lang and T. B. Allen. 

 Linnkan Society, at 8. - Disiribution of Conifers of China : Dr. Maxwell 

 T Masters, F.R.S.— Pre glacial Flora of Great Britain: Clement Reid, 

 F R S., and Mrs. Reid. -Cruise of H.M.S. Sealnrk, Part ii. : Dr. J. 

 Stanley Gardiner.— On Tubucellaria : A. W. Waters.— Cruise of the 

 Silver Belle: Dr. N. Wolfenden — Triassic Species of Zamiko and 

 Pterophyllum: E. A. N. Arber. 



CONTENTS. PAGE 



Medical Treatment by Health Resorts 145 



The Coral Porites. By S. J. H 146 



Realistic School Mathematics. By A. L 147 



Egyptian Antiquities By H. H 148 



Our Book Shelf: — 



Jamieson : " Heal Shadows'' 149 



Hodge: "Handbook of American Indians North of 



"Mexico" '49 



Wait : " A German Science Reader, with Notes and 



Vocabulary " '49 



Cresson : " Les Bases de la Philosophic naturaliste " . 149 

 Letters to the Editor: — 



The Origin of Radium.— Frederick Soddy .... 150 



The Structure of the .Kiher.— Dr. C. 'V. Burton . . 150 

 Decompo.silion of Radium Bromide.— Prof. Alfred 



W. Porter 15' 



The Mass of the o Particle.— Norman R. Campbell 151 

 The " Renal portal System " and Kidney Secretion.- 



W. 'Woodland 15' 



Mendelism and Biometry.— G. Udny Yule ; The 



Reviewer '5^ 



Some Instances of Unscientific Administration. 



By Prof. Ronald Ross, C.B., F.R.S 153 



Incandescent Electric Lamps. By Maurice 



Solomon '56 



Dr. Maxwell T. Masters, F.R.S 157 



Notes '57 



Our Astronomical Column : — 



Comet 1907.- (Giacobini) '6' 



Mars '6' 



A Third Asteroid near Jupiter's Orbit 161 



Radial Velocities of € and fCygni '6» 



Minor Planets discovered during 1906 162 



The Spectrum of Saturn '62 



Oxford University Observatory 162 



Celebration of the Bicentenary of Linnaeus .... 162 



The Royal Observatory, Greenwich 163 



Two Heavy Seismographs 164 



University and Educational Intelligence 164 



Societies and Academies '65 



Diary of Societies '^^ 



"SC. 1963, VOL. 76] 



