36o 



NA TV RE 



[February 9, 1899 



was submiltecl to dislillalion under reduced pressure. A liquid 

 was isolated of the composition C„l l,i,Oo, wliich proved to be the 

 methyl acetal of phenyl-glycol. It was synthesised by heating 

 phenyl-glycol and formaldehyde with dilute sulphuric acid on the 

 water bath. — Action of the benzidine diazochlorides of ortho- 

 toluidinc and orthodianisidine upon acetylacetone, by M. G. 

 Favrel. — On the reducing power of the tissues, by M. Henri 

 Hclier. The reducing power of a tissue is defined as the 

 quantity of oxygen that a gram of it is capable of removing 

 from potassium permanganate to reduce the latter to Mn.^Oj. The 

 present paper gives data for the liver and pancreas. — The 

 clinical exploration of the renal functions and of phloridzic 

 glycosuria, by M. Ch. Achard.— .Action of the Turkish bath 

 upon the internal organs, by MM. Bianchi and Felix Regnault. 

 — On a hailstorm observed at Bizerte, by M. Voiellaud. — 

 Barometric movements on the orthogonal of the meridian of the 

 moon, by M. A. Poincare. 



DIARY OF SOCIETIES. 



THURSDAY, Februarv q. 



Royal Society, at 4-30.— On the Reflection of Cathode Rays : A \. C. 

 Swinton.— On the Recovery of Iron from Overstrain: James Muir.— 

 A Soil Bacillus of the Type of De Barys if. niegatlienitm : Dr. W. C. 

 Sturgis. 



Royal Institution, at 3.— Toxins and Antitoxins : Dr. Allan Mac- 

 fadyen. 



Mathematical Society, at 8.— On a cert.iin Minimal Surface and on a 

 Solution of v-V=o: T. J. Bromwich.— The Group of Linear Homo- 

 geneous Substitutions on 1111/ Variables which is defined by a certain In- 

 variant : Dr. L. E. Dickson. — On the Complete System of Differential 

 Covarianls of a Single PfafTian Expression, and of a Set of Pfaffian Ex- 

 pressions : J. Brill —Groups of Order /t^j; E. A. Western.— The Irre- 

 ducible Concomitants of any Number of Binary Quarries : A. young.— 

 The Scattering of Electric Waves by an Insulating Sphere ; A. E. H. 

 Love, F.R.S.— The Figure of Jacobi with respect to a Linear System of 

 Hyperquadrics : Prof. Schoute. 

 .Institution of Electrical Engineers, at 8.— Rules for the Regulation 

 of the Wiring of Premises for Connection to Public Supply Mains: J. 

 Pigg.-The Regulation of Wiring Rules: C. H. Wordingham.— The 

 Institution Wiring Rules : R. E. Crompton.— (Continuation of Discussion, 

 if time permits): Electric Traction bv Surface Contacts : Miles Walker. 

 riNSTiTUTioN OF Mechanical Engineers, at 7.30.— Fifth Report to the 

 Alloys Research Committee : Steel : Sir William C. Roberts- Austen, 

 K.C.B., F R.S.-Machinery for Book and General Printing: William 

 Powrie. — Evaporative Condensers : H.irry G. V. Oldham. 



Camera Club, at 3.15.— The Heat of the Moon: The Earl of Ro.sse, 

 F.R.S. 



FRIDA r, February 10. 



KoYAL Institution, at 9— Motion of a Perfect Fluid: Prof. H. S. 

 Hele-Shaw. 



R JVAL .\STRON0MicAL SOCIETY, at 3.— .\nniversary' Meeting. 



Physical Society, at 5.— Annual General Meeting. — Address by the 

 President.— .\n Ampere-Meter and a Volt-Meter with a Long Scale : 

 Benjamin Davies. (This will probably be read by Dr. Lodge.) 



Malacolooical Society, at 8.— Annual General Meeting. 



Institution of Civil Engineers, at 8— The Electrical Driving of 

 Engineering Workshops : William Middleton. 



Institution of Mechanical Engineers, at 7.30 

 SATURDAY, February ii. 



Royal Institution, at 3.— Mcch.inical Properties of Bodies: Lord 

 Rayleigh. 



MONDAY. February 13. 



:1mperial Institute, at 8.30. — Cuba: Richard Davey. 



Royal Geourafhical Society, at 8.30. — Exploration in the Canadian 

 Rockies : a .Search for Mount Hooker and Mount Brown : Prof. Norman 

 Collie, F.R.S. 



TUESDA Y. February 14. 



Royal Institution, at 3. — Morphology of the Mollusca: Prof. E. Ray 



Lankester, F.R S. 

 .Institution op Civil Engineers, at 8.— The Lake Superior Iron 

 Ore Mines, and their Influence upon the Production of Iron and Steel : 

 Jeremiah Head and Archibald P. Head. 



Anthropological Institute, at 8.— The Arabs of the Indian Frontier: 

 SirT. H. Holdich, RE., K C.I.E., C.B. (With Lantern Illustrations.) 

 —Exhibition of Photographs by J. Guthrie Watson. 



Royal Horticultural Society. — Annual Meeting. 



Royal Photographic Society, at 8.— Annual General Meeting. 

 ll'EDNESDAY, February 15. 



Society of .\rts, at 8.— The Balloon .is an Instrument of Scientific Re- 

 search : Rev. John M. Bacon. 



Rival .Meteorological Society, at 7.30.— Report on the Phenological 

 Observations for 1898: Edw.ird Mawley.— The Circulation of the Atmo- 

 sphere : Prof. W. M. Davis. 



Royal Microscopical Society, at 8.— Preceded .at 7.30 by an Exhibition 

 of Objects shown by Multiple-Colour Illumination : Julius Rbeinberg. 



Ento-molocical Society, at 8. 



Oxford University Scientific Club, at 3 —Chemical Theories under 

 Discussion about the Year 1850— some Personal Reminiscences. 

 THURSDA Y. February 16. 



JKovAL Society, at ^.y>.—^•ro^aHc Papers: On the Reflex Electrical 

 Effects in Mixed Nerve and in the Anierior and Posterior Roots : Miss 

 Sowton.— The Characteristic of Nerve: Dr. A. I). Waller, F.R.S.— 

 Observations on the Cerebro-spinnl Fluid in the Hum.-in Subject: Dr. 

 Si. Clair Thomson, Dr. L. Hill, and Prof. Halliburton, F.R.S.-The 

 Thermal Deformation of the Cryslallised-Normal Sulphates of PoL-usium, 

 Rubidium, and Cicsium : A. E. Ti 



ion, at 3. — Toxii 



and Antitoxins : Dr. Allan Mac- 



Royal I^ 



fadyen. 

 Linnean Society, at 8— On the Genus I.tmnalia, Gray, with an 



Account of the Iir.inching Systems of the Order Alcyonacca: Gilbert C. 



Bourne.- On some African I.ahiafcu, wilh Alternate Leaves : J. H. 



Burkill .-ind C. H. Wright -Report on the Marine Mollusca obt.-iined 



during the First Expedition of Prof. A. C. Haddon to the Torres Straits : 



James Cosmo Melvifl and Robert Standen. 

 Chemical Society, at 8.— On the Absorption Spectrum and Constitution 



attributed to Cyanuric Acid : W.N.Hartley, F.R.S.— Ballot for the 



Election of Fellows. 



BOOKS, PAMPHLETS, and SERIALS RECEIVED. 



Books. — Recherches sur les Instruments les .M^lhoki el le Dessin 

 Topographiques ; Colonel A. Laussedat (Paris, I iai.lbitr-Villars).- Ele- 

 mentar>' Hydrostatics: C. Morgan (Rivingtoiis). — Die Welt als That: 

 Dr. I. Reinke (Berlin, Paetel) — West Africin Studies : M. H. Kingsley 

 (Macmillan).— Vaccination ; its Natural History and Pathology; Dr . S. 

 M. Copeman (Macmillan). — Society for the Promotion of Engineering 

 Education. Proceedings of the Sixth .\nnual Meeling(Columbia, Mo.). — 

 Elementary Physiology: B Moore (Longmans).— An Introduction to the 

 Differential and Integral Calculus and Differential Ec|ualions : F. G. 

 Taylor (Longm,ins).-Instincl and Reason: H. R. Marshall (Macmillan). 

 —The Human Body : Prof. H. N. Martin, 5th edition (New York, Holt). 

 —A Junior Course of Practical Zoology : A. M. Marshall and C. H. Hurst, 

 5th edition (Smith, Elder). 



Pamphlets —Lichi-, Elektrizitats- und X-Slrahlen : R. Mewes, Zweite 

 Ausgabe (Berlin, Krayn). — Sprachregeln fur die Bildung und Belonung 

 Zoologischer und Botanischer Namen ; P. Krelschmer (Berlin, Fried- 

 lander). — Dietary Studies in Chicago (Washington). 



Serials.— Contemporary Review, February (Isbister). — Photogram, 

 February (Dawbarn). — Physical Society of London, Proceedings, January 

 (Taylor).— Transactions of the Natural History Society of Glasgow, 

 Vol. v., n. s.. Pan 2 (Glasgow).— Natural Science, Febiuary (Pentland).— 

 Humanitarian, February (Duckworth). — Scribner's Magazine, February 

 (Low). — National Review, Februarv (Arnold) —Knowledge, February 

 (Witherby).— Fortnightly Review, February (Chapman).— Journal of 

 Botany, February (West) —LWnthropologie, tome ix. No, 6. — Observ- 

 atory, February (Taylor). — Geographical Journal, February (Stanford). — 

 Record of Technical and Secondary Education, January (Macmillan).— 

 Zeitschrifi fiir Physikalische Chemie, xxviii Band, i Heft (Leipzig).— 

 Bulletin of the .\merican Mathematical Society January (New York).— 

 Monthly Weather Review, October (Wa.shington). 



CONTENTS. PAGE 



A History of Coal Mining. By Prof. H. Louis . . 337 

 An Atlas of Bacteriology. By Dr. A. C. Houston . 338 

 Our Book Shelf:— 



Norman: "The World's Exchanges in 1S9S: a 

 Reckoner of Foreign and Colonial Exchanges." — 



G. H. B 339 



Anthony: "Lecture Notes on the Theory of Electrical 



Measurements." — D. K. M 339 



Veley: " The Microorganism of Faulty Rum." — Mrs. 



Percy Frankland 339 



Fierz : " Los Recctles du Distillateur " 339 



Letters to the Editor : — 



The .Vlleged Destruction of Swallows and Marlins in 



Italy. — Prof. Henry H. Giglioli 340 



The Il.ilching of Tuatara Eggs.— Prof. Arthur 



Dendy ; Prof. G. B. Howes, F.R.S 340 



Attr.icliiui in a Spherical Hollow. — Prof. Andrew 



Gray, F.R.S 341 



Larv.v in ,\nielope Horns. — Richard Crawshay ; 



Walter F. H. Blandford . 341 



Indian Solpugx or Pseudo-Spiders. — H. R. P. 



Carter 342 



Colouring of IManls. — May Rathbone 342 



The Origins of the Lines of a Cygni. (llltislraUd.) 



By Sir Norman Lockyer, K. C.B, F.R.S 342 



High Electromotive Force. (fUi(slnih\l.) By Prof. 



John Trowbridge 343 



Notes 345 



Our Astronomical Column : — 



Comet 1S9S \'II. (Coddington-Pauly) 350 



Eros (43?: 350 



The Sun's Ileal 350 



The Constitution of the Electric Spark. By Prof. 



Arthur Schuster, F.R.S., and G. Hemsalech . . 350 

 Mr. Balfour and Prof. Jebb on Technical and 



Secondary Education 352 



Experimental Contributions to the Theory of 



Heredity, lly Prof J. C. Ewart, F.R.S 354 



Massive Lava Flows on the Sierra Nevada .... 355 



University and Educational Intelligence 355 



Scientific Serials . 357 



Societies and Academies 35S 



Diary of Societies 360 



Books, Pamphlets, and Serials Received 360 



NO. 1528, VOL. 59] 



