384 



jVA ture 



[February 16. 1905 



Tsiherning's theory, as opposed to that of Helmholtz. — 

 Observations on the absorption bands of blood and oxyhae- 

 moplobin : MN[. Piettre and Vila. — Myelitis produced by 

 tuberculous toxins : K. Clement. — On the constitution of 

 Djebel Hadid : Paul Lemoine. — On the Eocene strata in 

 Western Morocco : A. Brives. — On the mode of formation 

 of high glacial valleys : Paul Girardin. 



New South Wales. 



Royal Society, November l6, 1904. — Mr. C. O. Burge, 

 president, in the chair. — On the occurrence of isolated crystals 

 of augite in the tufaceous mudstones near the top of the 

 upper marine series at Gerringong ; H. (i. Foxall. The 

 author gives the results of crystallographical and chemical 

 examinations of isolated crystals of augite, together with a 

 note on their occurrence. 



December 7, 1904. — Mr. C O. Burge, president, in the 

 chair. — .Mr. C. O. Burge delivered his presidential address 

 on the connection between engineering and science. .Among 

 the future triumphs of engineering helped by science were 

 mentioned the application of electricity to main line railways. 

 Then there are promises as regards conveyance of power by 

 electricity without wires. Increased economy in the utilisa- 

 tion of heat units in the ordinary steam engine will be a work 

 of the future, thus saving our rapidly diminishing fuel supply. 

 Other subjects mentioned as fit ones for the future were the 

 direct utilisation of the sun's rays for power, and of the rise 

 and fall of the tide for the same purpose ; the diminution of 

 skin friction in ships ; and of the resistance to air in ships 

 and trains ; the di.spersion of fog by electricity ; the further 

 investigation of fatigue in metals used for construction ; and 

 the application of single phase electricity to traction. — The 

 approximate colorimetric estimation of nickel and cobalt in 

 presence of one another : R. W. Challinor. Use is made of 

 the complementary colours of Ni and Co solutions. The 

 method is to be applied to the solution of the weighed Ni and 

 Co deposited by electrolysis. The mixed metals are dis- 

 solved in HNO,. the solution evaporated and diluted to a 

 definite volume and a fraction taken. Standard Ni (NO,), 

 or Co (NO,), solution is added until the colour matches a 

 neutral tinted solution of known strenglh ; both solutions 

 are brought finally to the same dilution, the colours being 

 compared by looking vertically down the tubes. — Note on a 

 combined wash-bottle and pipette : J. W. Hogarth. 



DIARY OF SOCIETIES. 



THURSDAY, February i6. 



Royal Society, at 4 30.— Polarised ROntgen Radiation: Dr. C. G. 

 Barkla.— The Effects of Mom-ntary Slrtsses in Metals: Prof. B. Hop- 

 kinson.— The Halogen Hydrides as Con<'uclin» Solvents. Pans I.— IV. : 

 B. D Steele, D. Mclnlosh, and E. H. Archibald.— Further Observations 

 on Slip-bands. Preliminary Note : W Rosenhain. 



R »YAL Institution, at 5.— Recent Work of the Geological Survey: 

 Prof. J. J. H. Teall, F.R S. 



Society of Arts, at 4.30 — The Indian Census of iqoi : Sir Charles A. 

 Elliott. K. C.S.I. 



LiNKEAN SoctETV, at 8.— A Revised Classilication of Roses : J. G. Baker, 

 K.R.S. — The Botany of the .-Vnglo-German Uganda Boundary Cjm- 

 mUsion : E. G. Baker, Spencer Moore, and Dr. A. B. Rendle. 

 FRIDA Y, Febrcary 17. 



RovAL Institution, at 9.— High Power Microscopy ; John W. Gordon. 



Geological Society, at 8. — Anniversary Meeting. 



Epidemiological Society, at 8.30.— The Protozoa in Relation to Disease : 

 Prof. E. J. .McWeeney. 



Institution OP Mechanical Engineer*, at 8.— Annual General Meet- 

 ing.— Adjourned Discussion on the American VLsil, 1C04. — The Strenglh 

 of Columns: Prof. W. E. Lilly. 



MONDA Y, February jo. 

 SociSTV OF Arts, at 8— Internal Combusticn Engines : Dugald Clerk. 

 Victoria Institute, at 4.30.— Biblical Astronomy: Lieut. -Colonel G. 



M.-icKinlay. 



TUESDAY, February ji. 

 RovAL Institution, at 5.— The Structure and Life of Animals: Piof. 



L. C. Mi.iU, F.R.S. 

 Royal Statistical Society, at 5. 

 Institution of Civil ENGistbRs. pi Z.—Ccniimtation cf Difcusiion:— 



Alfrcton Second Tunnel : E. V C. Tiencb.- The Reconstruction of 



.Moncreiffe Tunnel : D. McLellaii. -/•«/(•>-.■ Surface-Condensing Planis, 



and the Value of the Vacuum ProJuted : R. W. Allen. 

 Zoological Society, at 8.30. 



WEDNESDAY, February j2. 

 Geological Society, at 8.— On the Order of Succession of the Manx 



Slates in their Northern Half, and its Bearing on the Origin of ihe 



the Middle 



—On the Wash-c 

 V E. Middlelon. 

 rcepiions of Musical Pitch : John 



On some New Species of 

 edfrom the Coal-.iieasures : 

 Rhabdosphere: G. Murray, F.R.S. -^ 

 .iver Cells during Digesiion, and their 

 Prof. E. Wace Carlier.-The Colour- 

 lace.^. Part III.: F. Keeble and Dr. 

 jsed by the Beta and Gamma Ra)-S 

 -G. T. Beilby. 



: Work of Ihe Geological Survey : Prof. 



Schistose Breccia : Rev. J. F. Blake 



t:oal measures of South Yorkshire : 

 Society of Arts, at 8. — Some Misc( 



E. Borland. 



THURSDAY. Febrc 

 Royal Society, at ^.^o.—ProtahU Papers 



Lagenostoma : a Type of Pteridospem 



E. A. Newell Arber.-On " "' 

 On Changes observable in 

 Relation to Hepatic Seer. 

 Physiology of the Highei 



F. W. Gamble.— Phospho 

 of Radium. Part " " ~ 



RoyalInstiti-tion 

 J. J. H. Teall, F.R.S. 



Institution of Elsctrical Engineers, at 8. — CoHtinuation t>f Dit- 

 cuision .—The Value of Overhead .Mains for Electric Distributioti in Ihe 

 United Kingdom : G. L. .\ddenbrooke. 



FRIDAY. February 24. 



Royal Institution, at g. — Fungi: Prof. H. Marshall Ward, F.R.S. 



Physical Society, at 5. — On the Curvature Method of teaching 

 Ge- metrical Optics: Dr. C. V. Drysdale.- Exhibition of Pr. Meislings 

 Colour Patch .Apparatus: R. I. Sowlcr — .A Method of illustrating the 

 Laws of the Simple Pendulum, and an Exhibition of String Models of 

 Optical Systems : J. Schofield. 



Institutic.n of Civil Engi neers, at 3. — Morecambe Sewerage : Method 

 of La>-ing a 15-inch Cast-iron Sewer under the London and North- 

 western Railway; F. D. FlinL— The Reconstruction of Bow Bridge 

 over the River Lea : H. M. Rootham. 



SA TURDA Y, February 25. 



Royal Institution, at 3. — Archarology ; D. G. Hogarth. 



NO. 1842, VOL. 71] 



CONTENTS. PAGE 



The History of Coal Mining. By Bennett H. Brough 361 

 Mathematics of Billiards. By S. H. Burbury, F.R.S. 362 

 A Morphology of the Algae. Bv George Murray, 



F.R.S .' 362 



Our Book Shelf :— 



Le Messurier : " Game. Shore and Water Birds of 

 India : with Additional References to their Allied 

 Species in Other Parts of the World."— W. P. P. . 363 

 Prain : " The Species of Dalbergia of South-Eastern 



Asia" ,-3^3 



Gamble : " The Process Year Book. Penrose's 



Pictorial Annual, 1904-5 " 364 



Letters to the Editor : 



On a Method of Using the Tow-net as an Opening 

 and Closing Tow-net. — {///usira/ed.) -George 

 Murray, F.R.S. . . ... 364 



The Sixth Satellite of Jupiter.— Prof. C. A. Young 365 

 The Circulation of the Atmosphere.— James 



Thomson . . . . 365 



Remaikable Temperature Inversion and ihe Recent 



High Barometer.— ( ItWi Diagram)— VJ . H. Dines 365 

 Dates of Publicaiion of Scientific Books. — Henry 



Frowde ... 365 



A National Univeishy Library. — Prof. G. H. Bryan, 



F.R.S. . 366 



Mutation.— Prof. T. D. A. Cockerel! 366 



Fact in Sociol. gv.-F. W. H 366 



The Melting of Floating Ice— Heat 366 



A Lunat Rainbow. — J. McCrae 366 



Notes on Stonehenge. Ill The Earliest Circles. 

 (liluslratfd.) By Sir Norman Lockyer, K.C.B., 



F.R.S 367 



Animal Life. (lUuUratid.) By R. L 369 



The Condition of Chemical Industries in France. 



By W. R 369 



Notes 371 



Our Astronomical Column: — 



Ephemeris for Brooks's Comet, 1904 1 374 



Observations of Comets ... 374 



Additional I'eiiodical Comets due this Year ... 374 



Castor a fjuadruple Star 375 



Blood Pressures in Man. By Prof. T. Clifford 



Allbuit, F.R.S 37S 



Radiation Pressure. By Prof J. H. Poynting, 



F.R.S 376 



Geographical Results of the Tibet Mission .... 377 

 The London Conference on School Hygiene . . . 377 

 University and Educational Intelligence . . 379 



Societies and Academies ... 379 



Diary of Societies 384 



