i68 



NA TURE 



[June la, 1894 



by MM. A. TrilUt and R. Cambier— Mechanism of the action 

 of chlorine on isobutylic alcohol, byM. A. Brochet, — Researches 

 on the red pigmentary matter of Pyrrhocoris apterus (L.), by 

 M. C. Phisalix. — On the relations between the dorsal cord and 

 the hypophysis in birds, by M. G. Saint-Remy. — On a new 

 grigarine of the family of the Dactylophoride^, parasitic on 

 Geopbiles, by M. Louis Le^er. — On a Uslilagiuee parasitic on 

 the beet-root {Entyhma Uproideitm)^ by M. L. Trabut. — On a 

 vine disease caused by Botrytis cinerea^ by M. L. Ravaz. — Con- 

 tribution to the study of gioclases conjuguhs^ by M. Stanislas 

 Meunier. — Variations of the latent period of coagulation of 

 milk soured by rennet, by M. C. Pages. 



DIARY OF SOCIETIES. I 



London. 



THURSDA >', June 14. 

 Royal Society', at 4.30. — Flame Spectra at High Temperatures— Part 11. 

 The Specinim of Metallic Manganese, of .Alloys of Manganese, and of 

 Compounds coniainmg thai ElemenL Part III. The Spectroscooic Pheno- 

 mena and Thcrmo-chemistry of the Bessemer Process: VtcS. Hartley, 

 F.R.S. — The Complexity and the Dissociation of the Molecules of 

 Liquids: Prof. Ramsay, F. R.S.— (1) The ^!olecula^ Surface-encr(;y of 

 the Esters, showing its Variation with Chemical Consiiititi in : (a) The 

 Molecular Surfacc^ncrsy of Mixture* of Non-associating Liquids: Prof. , 

 Ramsay, F.R.S., and Mi5yi Emily Aston. — On a Method of Determining 

 the Thermal Conductivity of Mcfals, with Applications to Copper, Silver, 

 Gild, and Platinum : James H. Gray. 

 Mathematical Societv, at 8.— The Solutions of Two Differential Eiua- 

 tions : F. H. Jackson — A Theorem in Inequalities : A. R. Johnson. — 

 Some Properties of a Circle : R. Tucker.— Note on Four Special Circles 

 of Inversion of a System of Generalised Brocard Circles of a Plane 

 TrUngIc : J. Gnffiihs.— > )n the Order of the Eliminant of Two or more 

 Equations : Dr. R. Lachlan. 



FRIDAY, jLMEis- 

 QuEKETT Microscopical Club (20 H.-inover Squire, W.) at 8. 



SATURDAY, June 16. 

 Geologists' Ascociatios. — Excursion to Gravesend and Northfleet. 1 



Directors: Prof. T. Rupert Jones, F.R.S.. and F. C. J. Spurrell. 

 VoRtc^HJRE Naturalists' Ush'n". —Meeting at Pontefract for the Investi- 

 gation of the Neighbourhood of Ferr>'bridge, &c. 

 MOSDAY, JusEiS. 

 RovAL Geographical Society, at 8.30.— A Survey of the English Lakes ; 

 (with Illusiraiioni) : Dr. Hueh Robert Mill. 

 TUESDAY, June ig 

 Royal Statistical Societv (Museum of Practical Geology. aS Jermyn | 

 Stre-t, S.W.), at 7.45.— A Compari^n of the Realised Wealth and of the 

 Economic Condition of France and England, especially as relating to 

 their Agricultural Production and their Security in case of War : Mr. 

 William J. Harris. 

 Zoological Society, at 8.30.— On Lepidosiren and Protoptcrus : Prof. 

 Ray Lankester, F.R S. — Notes on some Specimens of Antlers of the 

 Fallow Deer showing Continuous V.ariation and the Effect of Total or 

 Partial Castration : Dr. G. Herbert Fowler. — On the Perforated Flexor 

 Muscles in «omc Birds : Mr. P. Chalmers Mitchell. 

 MiNERALOGiCAL SocittTV, At 8. — .\ Chcmical Study of some Native 

 Arseniales and Phosphates: Prof. A. H Church. F.R.S.— The Occur- 

 rence of Mispickel in th<? Sicw.irtry of Kitkcudbright : P. Dudgeon. 

 lYEDSESDAY. June so. 

 GKot.OGiCAL SociHTV, at 8.— On Dcrp Borings at Ciilford and Winkficid, 

 with Noici on those at Ware and Cheshimt : W. Whitaker. F.R S., and 

 A. J. Jukes-Browne. — On the Bargaie .Stone and the Pebble-beds of 

 Surrey, with especial regard to their Microscopic Contents: Frederick 

 Chapman.— 0.1 Deposits from Snow Irifi, with special reference to the 

 Origin of the Loess and the Pre^eivaiion of Mammoth-remains : Charles 

 Divison — .\dditions to the Fauna of the Olcnellus 7 >ne of the North- 

 West Highlands; B. N. Peach. F.R S.— Questions rcl.^iiDg to the 

 Formation of Coal*Seam<, including a New Theory of them : sviBgesic! 

 by Field and other Observations made during the ^asi decade on both 

 sides of the Atlantic: W. S. Greslcy.— < ibscrvations regarding the 

 Occurrence of Anthracite generally, with a New Theory of its 1 Migin : W. 

 >. Gresley.— The Igneous Rocks of the Neigh hour hoo<l of Builth : Henry 

 Woodn. — On the Relations of s'ime of the Older Fragmenial Rocks in 

 N'.jrtN W-:,' Caernarvonshire; Prof. T. G. Bonney, F.R.S., and Miss 

 ' ■ -in. 



R ■ . 'PicAL Society (20 Hanover Square. W ), at 6.— On the 



V f certain Characters generally accepted for Specific 



Ui^giivi^ if! the Diaiomarc-c : Mr. T. Comber. — Foraminifera of the 

 Gault of FolkeM)rie : Mr. T. Chapman. 

 Royal Meteorological Society, at 8.— Fogs reported with Strong 

 Wind« during the Fifteen Years xZ^b•^^■3 in the British l<ile« : Robert H. 

 .Scott, F.R.S. —Some Charactet^iiic Features of Gales and Strong Winds: 

 Richaid H. Curtis. 



THURSDAY, Ji:ne at. 

 Royal Society, at 4 30 — I'hc fallowing Papers will firobahly be read :— 

 On the Abnorpiion S(trr Ira r,f I p.lmr Siilmions : Dr. T .Swan. — On s'->me 

 Phenomena in Vacui; mons —On Operators in Phy-ical 



Malhemalic^, Part I 1 . ' »n the Structure and Affinities of 



Hcti pora cznilea ( r < .. i. Ations on the Structure of Xenia 



and Heteroxenia: Albeit • 'n ihi: Differential Invariants of 



Twisted Curves, with »om' ol the Appiicaiion to Quartic 



I 1 -^'- V' 1 ".*vther.— ; ^ .nvccjucnt on Exprnmcntat 



[ -Hum. I.tf, \ — McAiurcinent ofColour 



t: Captain \ —On the Singular .Solu- 



. Ordinary I),:: j , .;ttion» and the Theory of 



Hrof. A. C, l>ixon.— And utiier Pai»erft. 

 I.t ;v, ai 8 — On T.ibulation Ar«rt»: c. B. Clarke. F.R.S. 



Cnt.^i-A.. .... lETT, at 8.— The Specific Character of the Fermentation 



KuDctJons of V east Cells : Adrian J. Blown.— The Intcraclioa of Lead 



NO. 



1285, VOL. 



50] 



Sulphide with Lead Sulphate and Oxide: J. B. Hannay.— The Oxidation 

 of Tartaric Acid in the Presence of Iron: H. J. H. Kenton.— The ReU* 

 ti>n between the Solubility of a Ga^ and the Viscosity of its Solveat : 11 

 Prof. Tnorpe, F.R.S., and J. W. Rodger.— And other Papers. |l 



FRIDAY, June 33. 



Physical Society, at 5. — An Exhibition of Photographs of Flaires : 



Captain Abney. — An Elemen'ary Theory of Planiineters:_ Prof. Henrici. 



— The Hatchet Planimeter : F. W. Hill. — A New Integrating Apparatus : 



A. Sharp.- Other Papers if lime allows. 



BOOKS, PAMPHLETS, and SERIALS RECEIVED. 



Bo3KS. — Histoirc de L'Alimcot.itlon, L. I'.ourdcau (P.iris, Alcan).— On 

 tbe Development and Transmission of Power: Prof. W, C. Unwin (Long- 

 mans). — Quain's Elements of Anatomy : edited by Profs. Sch.Hferand Thane, 

 Vol. 3, part ^, iDth Edition (Longman-^) — Ostwald's Klassiker der Exakten 

 Wissenschafien, Nos. 46, 47. 53. 53 (Leipzig, Engelmann) —Report of the 

 Department of Public Works (N. S. W.) for the Year 1892 (Sydney, Potter). 

 — U.S. Commission of Fish and Fisheries Report. iSS^-gi (Philadelphia) — 

 Iowa Geological Sur\'ey. Vol. 1 (Des Moines). — Publications of the Wash- 

 burn observatory of the University of Wisconsin, Vol 8(Madison). — Report 

 of the Chief of the Weather Bureau, 1S91-92 (Washington). —The Frena 

 H.indbook. No. 2 (Beck).— Catalogue of the Mcsoiotc Plants in the Depart- 

 ment of Geology, British Museum (Natural History), the Wealden Flora, > 

 Part I ; AC. Seward (London).— Sitzungsberichte der K. B. Gcsellschaft 1 

 der Wissenschafien, 1893 (Pnig). ] 



PAMfHLET.s— Report on the Social Condition of the People: J. Nylaiid , 

 (Davy).— Sulla Solidifica/tone dellc Amalgame: D. Maz7otto, i. and ii. 

 (Ven zia, Ferrari).— Sui Sistemi Nolali delle onde Eletiriche : Ditto, ' 

 11. and iii. (Torino, Clausen). — Technogeography : O- T. Ma.».on (Wa-shing- 

 lon)— The Birth of Invention : O. T. Mason (Washin;ton).—The Pro:;"- 

 of Anthropolosv : O. T. Mason (Washington). — National Acadenr 

 Sciences, Vol. 64th ; Memoir — Tf-e Proteids or Albuminoids of the 

 Kernel: T. tt. Osborne. — Dry Methods of Sanitation : G. V. Pjore (> 

 ford) — Kappori Annuel sur TEtai del'Observatoire de Paris pour I'Ar 

 iS(>3 (Paris).- North American Species of Sagittaria and Lophoiocarpu^ 

 G. biiiith (St. LoiiisX 



Seri.\ls.— Gaietta Chimica It.iHana, 1S94. fasc. 5 (Rona).— In 

 Museum Notes, Vol. 3, N '. 3 (Ca1cuti.i).— Bulletin ol the Ksscx Inst ; 

 Vol. 26, Nos. I, 3. 3 (Salem). — Essex Institute Historical Collecti 

 Vols. 29and 3o(Saie'n).— I lustiated Archarologist. Jure (Claik)— Bn; 

 d- la Socitft^ a'Ar.ihropologie de Paris. No. 2, 1894 (Paris, Masson 

 M^moires de la Scclitd d'Aoihropologie de Paris, To ne i (3*-' scries), 2 t 

 (P-ris, Mxssjn)-- Bulletin de la SociiJi^ Impirialc des Naturalists 

 .Moscoii. 1893, No. 4 (Moscou). — Himmel und Erde, vi. Jahr;g. H' : 

 (Berlin). - Journ.il of the Anthropological Institute, May (K. Pau').— Medical 

 Magazine, June (Southwood) —Proceedings of the Edinburgh Mathe- 

 matical Society, Vol. I, Session 1883 (Williams and Norgate), — Proceeding* 

 of the American Philosophical Society, Vol. 31. No. 14.- (Philadelphia).— 

 American Meteorological Journal, June (Ginn).— Vcrhandlunsen des Natur- 

 histonschen Vere-n'i. Fiinfr. Jahrg. Zweite Halfte (Bonn).— Journal of the 

 Asiatic Society of Bengal, Vol. 6a. Part 2. No. 4 (Cakuita). 



CONTENTS. PAGE 



Mining Books 14S 



A New Standard Dictionary 146 



Our Book Shelf:— 



Koberts-.\usten : " .\n Introduction to the Study of 



Metallurgy." — W. Gowland 147 



Scott: " Structural liotany (Flowering Plants) " . . 147 

 Drummond : " The Lowell Lectures on the Ascent 



of Man" 147 



Letters to the Editor: — 



Tribute to Hertz 14" 



Bullet Troof Shields.— Mrs. Hubbard 148 



The Teeth and Civilisation. — Dr. Ed. Jas. Wenyon ; 



Surgeon-Major W. G. Black 148 



The Liwcll Observatory.— John Ritchie, jun. . . 149 r 

 The Uerlhollet-rroust Controversy and the Law of 



I) finite Proportions. — Philip J. Hartog .... 149 



The Oxford Meeting of the British Association . . 151 



Exhibitions of Physical Apparatus. Hy R A.G. . . 151 " 



August Kundt. liy Dr. H. du Bois 152 i 



Notes 153 



Our Astronomical Column : — 



Kepurt of the Astrononier-Royal for Scotland .... 157 



Award of the Watson Medal ii7 



Two New Calalo^ucs >57 



The Density of Nitrogen Gas. Hy Lord Rayleigh, 



Sec.R.S • 157 



Dr. Armstrong on the Publication of Scientific 



Literature "59 



The Work of Hertz. fiy Prof. Oliver Lodge, 



F.R.S i"o 



Study of Fluid Motion by Means of Coloured 



Bands. Ky Prof. Osborne Reynolds, F.R.S. . . 101 



Ui)iversity and Educational Intelligence 164' 



Scientific Serials >65 



Societies and Academies 1^5 



Diary of Societies '68 



Books, Pamphlets, and Serials Received 168 



