264 



NATURE 



[January 12, 1905 



of the quince race were yellow. — The bacterial origin of 

 Marrozamia gum : Dr. R. Greig Smith. An organism. 

 Bacillus macrozaniiae, n.sp., isolated from the tissues of 

 Macrozamia spiralis which was exuding a gum, produced, 

 upon Isvulose media, a slime from which a gum was 

 obtained. — On a new species of Rhizophyllum from the 

 Upper Silurian rocks of Yass, New South Wales : A. J. 

 Shearsby. A third species of Calceola-like, operculate, 

 rugose corals is described. 



DIARY OF SOCIETIES. 



THURSDAY, Januarv 12. 



Mathematical Society, at 5.30.— Generational Relations for the Abstract 

 Group simply Isomorphic with the Abstract Group LF [2, ^^i] ; Dr. W. 

 Bussey.— On a Class of Expansions in 0>cilIating Functions : Prof. 

 A. C. Oixon.— Isogonal Transformation and the Diameter Transforma- 

 tion ; H. L. Trachtenberg.— A Generalisation of the Legendre Poly- 

 nomial : H. Bateman. — Current Flow in Rectangular Conductors: 

 H. Fletcher Moulion.— Basic Generalisations of some well known 

 Analytic Functions: Rev. F. H. Jackson.— On the Kinematics a"d 

 Dynamics of a Granular Medium in Normal Piling: J. H. Jeans--On 

 Alternants and Continuous Groups : Dr. H. F. Baker. 



Institution of Electrical ENGiNEKR>i, at 8. — The Combination of 

 Dust Destructors and Electricity Works Economically Considered : 

 W. P. Adams. (Conclusion of Discussion.)— Fuel Economy in Steam 

 Power Plants : Wm. H. Booth and J. B. C. Kershaw. 



FRIDAY, January 13. 



ROYAi. Astronomical Societv. at 5. — On the Temperature of Sun-spots 

 and on the Spectrum of an Artificial One : W. E. Wilson.— On Terms of 

 Long Period in the Complete Expression for the Moons Longitude : E. 

 Nevill.— The Longitude of the Moon's Perigee : P. H. Cowell.— On the 

 Relative Brightness of Stars: J- E. Gore.— On the Variable Star 

 Y Aurigae : A. S. Williams.- The Spiral Nebula ^ I. 153 Ceti : W. S- 

 Franks— Sun-spots and Magnetic Storms: A. ?>c\i\i^i&T.—PromisfH 

 Papers : Magnetic Storms and Associated Sun-spots : Rev. A. L. 

 Cortie.— On the Possible Effect of Radiation on the Motion of Comets: 

 H. C. Plummer.— Note on the Re-determination of the Paris-Greenwich 



: LoDgitude (communicated by the Astronomer-Royal). — Observations of 

 the Spectra of Sun-spots, Region C to D {communicated by the Astro- 

 nomer-Royal) -/'r^j^aW^ Discussion of Mr. Maunder's Paper in the 

 Monthly Notices^ on the Connection of Magnetic Storms with the 

 Rotation of the Sun. 



Institution of Civil Engineers, at 8. — Theory of Electricity and 

 Magnetism : James Swinburne. 



Malacoi.ogical Societv, at 8. — A Review of the Genera of the family 

 Mytilid^ : A. J. Jukes-Browne.— Note on the Type of Geomelania, with 

 Description of New Species: E. R. Sykes.— On Three Species of 

 Dyakia from Sumatra : E. R. Sykes- — Some Nudibranchs from the 

 Pacific, including a New Genus, Chromodoridella : Sir C. Eliot, K.C.M.G. 

 — Motes on Two Rare British Nudibranchs, Hero /orJHOsa, var. 

 arborescenSy and Staurodoris maculata'. Sir C- Eliot, K.C.M.G. — 

 Description of a new Achatina from the Zambesi : H. B. Preston. 

 MONDAY, January 16. 



Victoria Institute, at 4.30.— The History of Rajputana : Col. T. Hol- 

 bein Hendley. 



TUESDAY, January 17. 



RovAL Institution, at 5.— The Structure of Animals : Prof. L. C. 

 Miall, F.R.S. 



Royal Statistical Society, at 5. 



Institution of Civil Engineers, at 8.— The River Hooghly : L. F. 

 Vernon-Harcourt. 



Zoological Society, at 8.30. — On a Collection of Sipunculids made at 

 Singapore and Malacca : W. F. Lanchester —On a Collection of 

 Geph>Tea from Zanzibar : W. F. Lanchester. — On the Sipunculids and 

 Echiurids collected during the " Skeat Expedition" to the Malay 

 Peninsula: W. F. Lanchester.— On the Oral and Pharyngeal Denticles 

 of Elasmobranchs : A. D. Imms. — A Contribution to the Anatomy of 

 Chlamydosaurus and some other Agamids : F. E. Beddard. F.K.S.- 

 A Note on the Brain of Cynopitkeciis niger; F. E. Beddard, F.R.S. 

 WEDNESDAY, January 18. 



Chemical Society, at 5.30.— (i) Nitrogen Haloeen Derivatives of the 

 Sulphonamides. Part i. : Sulphondichloroamides and Sulphonalkyl- 

 chlofoamides. — (2) Nitrogen Halogen Derivatives of the Sulphonamides. 

 Part ii. : Sulphondibromoamides and Sulphonalkylbromoamides ; F. D. 

 Chattaway.— Electrolytic Oxidation of Aliphatic Aldehydes : H. D. I aw. 

 — The Diazo-Herivalives of the Benzenesulphonylphenylenediamines : 

 G T Morgan and F. M. G. Micklethwait.— The Molecular Condition in 

 Solution of Ferrous Potassium Oxalate : S. E. Sheppard and C. E. K. 

 Mees. — The-Formationof Magnesia from Magnesium Carbonate by Heat, 

 and the Effect of Temperature on the Properties of the Product : W. C. 

 Anderson. — Transformations of Derivatives of i-Tribromodiazobenzene ; 

 K. r. P. Orton.— Ihe Addition of Sodium Bisulphite to Ketonic Com- 

 pounds : A. W. Stewaru 



Entomological Society, at 8.— Annual Meeting. Address by the Pre- 

 s!Jent, Prof. E. B. Poulton, F.R.S. 



Geological Socibty, at 8. — The Geology of Arenig Fawr and Moel 

 Llyfnant : W. G. Fearnsides. 



Society of ARTS^atS. — Wireless Telegraphy and War Correspondence: 

 Capt. Lionel James. 



Royal Microscopical Society, at 8.— What were the Carboniferous 

 Ferns? the President's Annual Address. 



KovAL Meteorological Societv, at 7.40. — Annual General Meeting. 

 Addre-is on the Connection of Meieorology with other Sciences : the 

 President, Capt. D. Wilson-Barket. 



NO. 1837, VOL. 71] 



THURSDAY, January 19. 



RovAL Society, at 4.30. — Probable Papers : On the " Blaze Currents " of 

 the Gall Bladder of the Frog : Mrs. A. M. Waller.— The Dual Force of 

 the Divi<iing Cell Part i. : The Achromatic Spindle Figure illustrated 

 by Magnetic Chains of Force : Prof. M. Hartog.- Note on the Effects 

 produced on Rats by the Trypanosomata of Gambia Fever and Sleeping 

 Sickness: H. G. PHmmer.— Further Histological Studies on the Localisa- 

 tion of Cerebral Function. The Brains of Felis, Canis and Sus compared 

 with that of Homo : Dr. A. W. Campbell. 



Linnean Society, at 8.— Botanical Collecting: Dr. A. Henry —On the 

 Cranial Osteology of the Families Osteoglossidae, Pantodontidae, and 

 Phractolaemids : Dr. W. G. Ridewood. 



Society of Arts, at 4.30.— The Gates of Tibet : Douglas W. Freshfield. 

 FRIDAY, January 20. 



Royal Institution, at g. — New Low Temperature Phenomena : Sir 

 J. Dewar, F.R.S. 



Epidemiological Society, at 8.30. 



Institution of Mechanical Engineers, at 8. — Some Impressions of 

 American Workshops: A. J. Gimson. — Waterworks Pumping H ngines in 

 the United States and Canada: J. Barr.— Some Features in the Design 

 and Construction of American Planing Machines: A. Kenrick, lun. : 

 Engines at the Power Stations, and at the St. Louis Exhibition : 

 A. Saxon. 



contents. page 



Scientific Thought in Europe. By Prof. G. H. 



Bryan, F.R.S 241 



The Problems of Variation. By E. B. P 243 



Mathematical Theory of Eclipses. By W. E. P. 244 



English Field-Botany 245 



Sanitary Engineering. By T. H. B 246 



Our Book Shelf :— 



Aries: "La Statique chimique basee sur les deux 



Principes fondamentaux de la Thermodynamique" ; 



Roozeboom : " Die heterogenen Gleichgewichte vom 



Standpunkte der Phasenlehre. ' — J. W. . . . 247 



Stone : " The Timbers of Commerce and their 



Identification " 247 



" Verhandlungen der deutschen zoologischen Gesell- 



scatt, for 1904." — R. L 247 



Hyatt- Woolf: " The Optical Dictionary " . . 248 



Hewitt: " Practical Professional Photography ' 248 



Price : '* Solutions of the Exercises in Godfrey and 



Siddons's Elementary Geometry" 248 



Letters to the Editor : — 



Average Number of Kinsfolk in Each Degree. -- 



Dr. Francis Galton, F.R.S 248 



On the State in which Helium Exists in Minerals. — 



Prof. Morris W. Travers, F.R.S f . 24S 



The Pollination of Exotic Flowers. — Ella M. Bryant 249 

 Reversal of Charge in Induction Machines. — R. 



Langton Cole 249 



Evil Spirits as a Cause of Sickness in Babylonia. 



[Illustrated.) . . 249 



Speech Curves. (IllustrateJ.) By Prof. John G. 



McKendrick, F.R.S 250 



Geology of Spiti. (Illustrated.) 251 



Sir Lauder Brunton on the Need of Physical 



Education 252 



Notes 253 



Our Astronomical Column : — 



Discovery of a Sixth Satellite to Jupiter 256 



Comet 1904 ii'(Giacobini) 256 



Elements and Ephemeris for Comet 1904 « 256 



Colours of Stars in the Southern Hemisphere .... 256 



'' The Heavens at a Glance" 256 



Astronomical " .\nnuario " of the Tuiin Observatory . 256 



Origin of Lunar Formations 256 



Plant Associations in Moorland Districts. [lilus. 



trated.) By Francis J, Lewis ■ . . . . 257 



The Abnormal Tides of January 7 258 



The Electro-thermic Manufacture of Iron and Steel. 



By Prof J. O. Arnold 25S 



London Fog Inquiry, 1901-3 259 



University and Educational Intelligence . . . 260 



Societies and Academies 261 



Diary of Societies 264 



