48 



NA TURE 



[November ii. 1897 



DIARY OF SOCIETIES. 



THURSDAY, November ii. 

 Institution OF Electrical Engineers, at 8. — Accumulator Traction on 



Rails and Ordinary Roads : L. Epstein. 

 Mathematical Society, at 8. — On the Poncelet Polygons of a Limagon : 



Prof. F. Morley. — On an Extension of the Exponential Theorem : J. E. 



Campbell. — The Integral /P,"j dx and Allied Forms in Legendre's 



Functions, between Arbitrary Limits: R. Ha greaves. — The Character of 

 the General Integral of Partial Differential Equations : Hrof. Forsyth, 

 F.R.S.— The Calculus of Equivalent Statements (No. 7): H. MacColl. 



FRIDA Y, November 12. 



Royal Astronomical Society, at 8.— On the Nature of the Oibit of 

 •y Lupi : T. J. J. See. — List No. 4 of Nebula; discovered at the Lowe 

 Ob.servatory : Lewis Swift. — Equatorial comparisons of Uranus with 41 

 LibrjE, and a probable Occultation of the Star by th'; Planet : John 

 Tebbutt.— On the Effect of Chromatic Dispersion of the Atmosphere on 

 the Parallaxes of a Centauri and j3 Orionis ; and on a Method of Deter- 

 mining its Effect on the Value of the Solar Parallax derived from Helio- 

 meter Observations of the , Minor Planets: David Gill. — The Great 

 Equatorial Current of Jupiter : A. Stanley Williams.— Approximate 

 Ephemeris of the Leonids from 1897 December 24 to 1898 April 8 : G. 

 Johnstone Stoney. — On the Effect upon the Moon's Motion of a Hypo- 

 thetical Change in the Law of Gravitation : Robert Bryant. — A Spectro- 

 scopic Method for Determining the Second and Third Contacts during a 

 Total Eclipse of the Sun : Wm. Shackleton. — Note on a Result used by 

 Prof. Wadsworth in several rtcently published Papers : H. F. Newall. 



Malacological Society (mthe apartments of the Linnean Society), at 8. 

 — Malacological Notes made during a Journey through Russia; with 

 some Account of Dredgings in the Black Sea : G. F. Harris.— Descrip- 

 tion of a New Species of MuUeria from India : Edgar A. Smith. — Note 

 on a Vai iety of Khaphaiilus Lorraini, with a List of the known Species: 

 Edgar A. Smith. — On Streptaxis gtacitis, a New Species Irom Ceylon : 

 Oliver CoUett. — Revision of the New Zealand Rissoiida; : H. Suter. 



Physical Society (in the rooms of the Chemical Society), at 4. — Council 



Meeting. At 5.— On the Lsothermals of Ether: J. Rose-lnnes. — On 



the Variation with Temperature of the Electromotive Force ot the H- 

 Form of Clark Cells : F. S. Spiers and F. Twyman. 



TUESDAY, November 16. 

 Zoological Society, at 8.30.— On British Medusa: E. T. Browne. — On 



Three Consignments of Butterflies collected in Natal in i8g6 and 1897 by 



Guy A. K. Marshall : Dr. A. G. Butler.— On the Sydney Busu-Rat 



(Mus arboricola) : P^dgar B. Waite. 

 /Mineralogical Society, at 8. — Anniversary Meeting.^Election of 



Officers and Council. — On Augeliie from Bolivia : L. J. Spencer. 

 ^Institution of Civil Engineers, at 8. — The Manchester Ship Canal ; 



Sir E. Leader Williams. — The Eastham Division : Whately Eliot. The 



Runcorn Division : Sir E. Leader Williams. The Irlam Division : W. 



O. E. Meade-King. 

 , Royal S iatistical Society, at 5.30 — Notes on the Subjects discussed 



at the Meeting of the International Statistical Institute at St. Petersburg. 



1897 : Major P. G. Craigie. 

 , .Royal Photographic bociETV, 12 Hanover Square, W., at 8. — A Review 



of Triple Printing Methods : E. Sanger Shepherd. , 



WEDNESDAY, November 17. 



"Society of Arts, at 8.— The Colonies : their Arts, Manufactures, and 

 Commerce : Sir Owen Tudor Burne. 



Geological Society, at 8. — The Geology of Rotuma : J. S. Gardiner. — A 

 Geological Survey of the Witwatersrand and other Districts in the 

 Southern Transvaal: Dr> F. H. Hatch. — Observations on the Genus 

 Aclioina de Koninck, with Descriptions of British Species and some 

 other Carboniferous Gasteropoda : Jane Donald. 

 Entomological Society, at 8. — Some Results obtained from the Hybrid- 

 isation of Allied Species : J. W. Tutt. 

 Royal Meteorological Society (at the Institution of Civil Engineers), 

 at 7.30. — Results of a Comparison between the Sunshine Records ob- 

 tained simultaneously from a Campbell Stokes Burning Recorder and 

 from a Jordan Photographic Recorder : Richard H. Curt.s. 

 Royal Microscopical Society, at 8. 



. Sanitary Institute, at 8. — A Discussion on the Pollution of Water 

 Supplies by Encampments of Hop-Pickers, Casual Workers, Tramps, 

 &c. : to be opened by Prof. W. H. Corfield, in reference to the Dangers 

 of Pollution of Municipal Water Supplies ; and by Miss M. A. Chrei- 

 man, in reference to the Sanitary Control of Hop-Pickers, &c. 



THURSDAY, November 18. 

 IR.OVAL Society, at 4.30. — Account of a Comparison of Magnetic Instru- 

 ments at Kew Observatory : C. Chree, F.R.S.— Note on the Influence of 

 very Low Temperatures on the Germinative Power of Seeds : H. T. 

 Brown, F.R.S., and F. Lscombe.— On the Structure and Affiniiies of 

 Fossil Plants from the Palseozox Rocks. II. On Spencerites, a New 

 vGenus of Lycopodiaceous Cones from the Coal Measures, founded on the 

 Lepidodendron Spencei-i oiWiWiumMn : D. H. Scott, F.R.S.— The Histo- 

 logy of the Cell-wall, with special reference to the Mode of Connection of 

 Cells : W. Gardiner, F.R.S.— Mathematical Contributions to the Theory 

 oi Evolution. IV. On the Probable Errors of Frequency Constants, and 

 on the Influence of Random Selection on Variation and Correlation : 

 Prof. K. Pearson, F.R.S., and L. N. G. Filon — On the Geometrical 

 Treatment of the " Normal Curve " of Statistics, with especial reference 

 to Correlation, and to the Theory of Error : W. F. Sheppard. 



Linnean Society, at 8. — On Pontoholbos maimarensis : Prof. A. Dendy. 

 — On Haddonia, a New Genus of Foraminifera : F. Chapman. 



Chemical Society, at 8 — On the Decomposition of Camphoric Acid by 

 Fusion with Potash or Scda : Dr. A. W. Crossley and W. H. Perkin, 

 jun., F.R.S. — Experiments on the Synthesis of Camphoric Acid : W. H. 

 Bentley and W. H. Perkin, jun., F.R.S. — The Action of Magnesium on 

 Cupric Sulphate Solution : Dr. Frank Clowes and R. M. Caven. — Pro- 

 perties and Relationships of Di-hydroxytartaric Acid : H. J. Horstman 

 Fenton. 



BOOKS, PAMPHLETS, and SERIALS RECEIVED 



Books. — Memorials Journal and Botanical Correspondence of C. C. 

 Babingtnn, F.R.S. (Cambridge, Macmillan and Bowes).— North America. 

 Vol. I. Canada and Newfoundland : S E. Dawson (Stanford). — Resultate 

 der Wissenschaftlichen Reforschung des Balatonsees, Zweiter Band, Erster 

 Theil (Wien. HOlzel).— Bhu und Leben unserer Waldbaume : Dr. M. 

 Bii.sgen (Jena, Fischer).— The Practice of Massage : A. S. Eccles, 2nd edi- 

 tion (Baill ere.— Air, Food, and Exercises : Dr. A. Rabagliati (Bailliere).— 

 Gases : their Constitution and Functions : S. J. Corrigan, Part 3 (St. 

 Paul, Minn.).— Die Zig^uner : Prof. G. Cora (Turin).— The Meteorology 

 of Edinburgh : R. C. Mossman, 2 parts (Edinburgh, Grant).— A System of 

 Medicine : edited by Dr. Clifford AUbutt, Vol. iv. (Macmillan).— Les Con- 

 stantes Phvsico-<ihimiques : D. Sidersky (Paris, Gauthier-Villars).— Biblio- 

 graphy of X-Ray Literature and Research (1896-97) : edited by C E. S. 

 Phillips {Electrician Company).— William H arvey : D' Arcy Power (Unwin). 

 —A History of Fowling : Rev. H. A. Macpherson (Edinburgh, Douglas).— 

 Botanisches Bilderbuch fiir Jung und Ult: F. Bley (Berlin, S>.hmidt).— 

 University College, Nottingham, Calendar, 1897-98 (Nottingham, Sands). 



Pamphlets.- Random Shots at Birds , and Men: " Jim Crow " (Rox- 

 burghe Press). — Notions G^n^rales sur L'Ecorce Terrestre : Prof. A. de 

 Lappa rent (Paris, Masson). 



Serial.s.— Century Magazine, November (Macmillan).— Journal of the 

 Sanitary Institute, October (Stanford).— Reale Istituto Lombardo di 

 Scienze e Letture, Rendiconti, serie ii. Vol. xxx. Fasc. xvi. (Milano). 

 —American Naturalist, October (Philadelphia).— Astrophysical Journal, 

 October (Chicago).— The Atoll of Funafuti, Part 4 (Sydney). -Zeit- 

 .schrift fur Physikalische Chemie, xxiv. Band, 2 Heft (Leipzig).— 

 Anales del Museo Nacional de Buenos Aires, Tome v. (Buenos Aires). — 

 Geological Magazine, November (Dulau).— Scribner's Magazine, Novem- 

 ber (Low).— Journal of Botany, November (West).— History of Mankind : 

 F. Ratzel, translated. Part 21 (Macmillan).— Fortnightly Review, Novem- 

 ber (Chapman).— Knowledge, November (Holborn).— Gazzetta Chimica 

 Italiana, 1897, Parte ii. Fa>c. iv. (Roma).— Geographical Journal, Novem- 

 ber (Stanford).— Transactions of the Rochdale Literary and Scientific 

 Society, 1896-97 (Rochdale).— North American Fauna, No. 13 (Washing- 

 ton).— Strand Magazine, November (Newnes).— Nansen's Farthest North, 

 Part I (Newnes) —M6moires de la Socie'te de Physique et d'Histoire 

 Naturelle de Geneve, Tome xxxii. seconde Partie (Geneve).— American 

 Journal of Science, November (New Haven). 



CONTENTS. PAGE 



Mimicry in Butterflies and Moths. II. By 



E. B. P 25 



The Action of Medicines 26 



Organic Chemical Manipulation. By N 28 



Our Book Shelf:— 



Cornish: "Nights with an Old Gunner, and other 



Studies of Wild Life."— L. C. M 29 



Fischer : " Untersuchungen iiber den Bau der Cyano- 



phyceen und Bakterien " 29 



Sanderson: "Electricity and Magnetism for Be- 

 ginners."— A. P. C 29 



Noyes : "Organic Chemistry for the Laboratory."— 



Dr. A. Harden 29 



"The Reliquary and Illustrated ArchEeologist." . ... 29 



Fletcher: " The Commercial Uses of Coal Gas " . . 29 

 Letters to the Editor:— 



The Law of Divisibility.— Henry T. Burgess ... 30 

 A Link in the Evolution of a Certain Form of Induc- 

 tion Coil.— Rev. F. J. Jervis-Smith, F.R.S. . . 30 



The Leonid Meteors.— W. F. Denning 30 



Insects and Colour.— Rev. Alfred Thornley . ... 3° 

 High-Pressure Electricity. {Illustrated.) By W. 



E. A 31 



The Rev. P. B. Brodie, M.A., F.G.S. By H. B. W. 31 



Notes 32 



Our Astronomical Column : — 



The Coming Total Eclipse of the Sun 35 



The Binary & 395 - 82 Ceti 3^ 



Telescopic Seeing 3° 



The November Meteors 3o 



The Connection between the Characters of Iso- 

 morphous Salts and the Atomic Weight of the 



Metals Contained. {Ilbistrated.) By A. E. Tutton 36 



The Jackson-Harmsworth Arctic Expedition ... 40 



Report on Technological Examinations 4° 



Experimental Morphology. By Prof. G. F. Atkin- 

 son 41 



University and Educational Intelligence 46 



Scientific Serials 46 



Societies and Academies 47 



Diary of Societies 4^ 



Books, Pamphlets, and Serials Received 48 



NO. 1463, VOL. 57] 



