too 



NATURE 



[April 20, 1899 



lime, which wuuld corresi:)oml to variations in the heats of 

 solution. This, however, was not borne out by the experi- 

 ments, samples of lime prepared at looo', 1200', 2000', and 

 the temperature of the electric furnace all giving the same 

 results in the calorimeter — Artino-photometer based upon 

 the luminosity of phr)sphorescent zinc sulphide and the intensity 

 or nature of the exciting sources of light, by M. Charles 

 Henry. —On dextrine considered as a reserve material, by M. 

 Leclerc du Sablon.— On some new anatomical peculiarities in 

 the fatty grains (cotyledons and endosperm), by M. Edouard 

 Heckel — On an extraordinary halo observed at Paris, April 5, 

 1899, by M. Joseph Jaubert. 



DIARY OF SOCIETIES. 



THURSDAY, Air II. :o. 



Royal Society, at 4.30.— The PhyMological Action of Choline and 

 Ncurine: Dr. Moll, F.R.S., and Ur. Halliburton, F.R.S.— Inteslinal 

 Abiorplion, especially on ihe AbMrplion of Serum, Peptone, and Glu- 

 cose : Prof. R. Waymoulh Reid, F.R.S.— Studies on the Morpholoey of 

 Spore-producing Members. No. 4. The Leplosporangiale : Prof. F. O. 

 Bower, F.R.S.— Note on the Ferlililyof Different Breeds of Sheep, with 

 Remarks on the Prevalence of Abortion and Barrenness therein : W. 

 Heape.— Some (urther Remarks on Red-water or Texas Fever : A. 

 Edinglon. 



Royal Institution, at 3.— The .Atmosphere: Prof. J. Dewar, F.R.S. 



LiNNEAN Society, at 8.— The Botany of the Ceylon Patanas: H. W. H. 

 Pearson.— Imitation as a Source of Anomalies : Prof. R. J. Anderson.— 

 List of British and Irish Spiders.— Rev. O. Pickard Cambridge, F.R.S. 

 -Chemical Society, at 8.— Some Dipyridyl Derivatives from Citrazinic 

 Acid : W. J. Sell and H. Jackson.— On ihe Interaction of .Mercurous and 

 Mercuric Nilrites, with the Nitrites of Silver and Sodium : P. C. Ray. 

 —The Synthesis and Prep.-iration of Terebic and Terpenylic Acids : W. 

 Trevor I..awrence.— The Allolropic Modifications of Phosphorus : D. L. 

 Chapman.— /3-Isopropyl Glutaric Acid : F. H. Howies and F. F. Thorpe. 

 —Ethyl Ammoniumsulphite: Edward Divers and Masataka Oeawa.— 

 Ethyl Ammonium Selenile and Non-existence of Amidoselenites (Seleno- 

 'samaies) : Edward Divers and Seihachi Hada. 



Institution of Civil Engineers, at 8.— "James Forrest" Lecture: 

 Magnetism : Prof. J. A. Ewing, F.R.S. 



FRIDAY, April 21. 



Royal Institution, at 9.— Structure of the Brain in Relation to its 

 Functions: Frederick Walker Mott. F.R.S. 



Physical Society, at =;.— On the Effect of atSolid Conducting Sphere in 

 a Variable Magnetic Field on the Magnetic Induction at a Point Out- 

 side : C S. Whitehead.— Demonstration of Richards's Method of Stan- 

 dardising Thermometers : Dr. R. A. Lehfeldl. 



Epidemiological Society, at 8.30 —The Relations of B.-icteriology to 

 Epidemiology: Dr. F. R. BlaxalL 



SATURDAY, April 22. 

 Geologists' Association. — Excursion to Sta 



aker, F.R.S. Leave W.atcrloo at 1.57 p.m. 



2.36 p.m. 



MONDA Y, April 24. 

 Society OP Arts, at 8.— Leather Manufacture : Prof. Henry R. Procter. 

 RovAL Geographical Society, at 8.30.— Journeys on the Nyasa-Tan- 



gan>'ika Plateau : Captain F. R. F. Boileau, R E., and L. A. Wallace. 

 Society ofChe.mical Industry, at 8.30.— The Relations of the Society 



to Chemical Engineering and to Industrial Research : George Beilby. 

 Institute op Actuaries, at 5.30 —On the Requirements of the Life 



Assurance Companies Act, 1870, in regard to Valuation Returns, with 



i;ome Notes on the Classification and Valuation of Special Policies : 



Ralph Todhunter. 



TUESDA Y. April 25. 



•Royal Institution, at 3.— Zebras and Zebra Hybrids : Prof. I. Cossar 



Ewart, F.R.S. 

 Anthropological Institute, at 8.30.— Ju Ju Laws and Customs of 



the Niger Delta : Le Comte C. de Cardi. Illustrated by Lantern Slides 



and a variety of objects from West Africa -Exhibition of Lantern Slides 



of Views in ihe Cofony of Sierra Leone and the Protectorate, with Short 



Descriptive Account : T. J. Alldridge. 

 Institution of Civil Engineers, at 8.— Annual General Meeting of 



Corporate Members. 

 >RovAL Photographic Society 



of filass Diaphragms : Thomas 



Director : W. Whit- 

 ive Staines Ji 



' 8. — A Demonstration of the Making 



WEDNESDA Y, A 

 Society op Arts, at 8.— Coal Supplies : T. Forster Bi 

 Geological Society, at 8.— On Limestone-Knolls in 



of Voikshirc and elsewhere : J. E Ma 

 WOw Thorpe Fell, between Skipton : 

 Dakyns.— (in Three Species of Lame 

 RockiofGreat Britain : Dr. Wheeltor 



the Cr.aven District 

 , F R.S.— The Limestone-Knolls 

 id Grassington in Craven : J. R. 

 ibranchs from the Carboniferous 

 Hind. 



THURSDAY, Ap 



1 4.30. 



IL 27. 



Royal Society, 



Royal Institution, at 3.— The Atmosphere : Prof. J. Dewar, F.R.S. 



Institution op Electrical Engineers, at 8.— Ex|ierimenis on Alter- 

 nate Current Arcs by Aid of Oscillographs : W. Duddell and E. W. 

 Marchant. (Conclusion of Discussion.)— Capacity Measurements of Loni: 

 Submarine Cables : J. Elton Young. 



Institution of Mechanical Engineers, at 7.30. — Address by the 

 President, Sir William H. White, K.C.B., F.R.S. 



PRIDA Y, April 28. 

 Royal I^^stitution, at 9.— Some Features of the Electric Induction 



Motor : Prof C. A. Cams Wilson. 

 Institution' OF .Mfchanical Engineers, 317.30. — Evaporative Con 



denscrs : Harry G. V. Oldham. 



BOOKS and SERIALS RECEIVED. 



Books — Elemenl.iry Physics and Chemistry, First Stage : R. A. 

 Gregory and R T. Simmons (Macmillan).— Th. Ipane : C. Graham 

 (Unwin). — La Bicycletle, sa Construction el sa Forme : Dr. C. Hourlet 

 (Paris, Gauthier-Villars). — Die Vegetation der Erde, iii. : Dr. G Radde 

 (Leipzig, Engelm.inn).— The Hunlerian Oration delivered on February 

 II, iSm; SirW. MacCormac (Smith, Elder) —Inwoods Tablesof Interest 

 and Mortality for the Purcha-sing of Estates, &c., 25lh edition, revised, &c., 

 by W. Schooling (Ix3ckwood).—I..ehrbuch der Algebra: Prof. H. Weber, 

 Zweite AuRage, Zwciter Band (Braunschweig, Vieweg).— Geschichle der 

 Physikalischen Experimentierkunsl : Profs. Gerland and TraumUller 

 (Leipzig. Engelmann) — The Natural Waters of Harrogate : Dr. F. W. 

 Smith (DawbarnV 



Serials.— Zeitschrift fur Physikalische Chemie. xxviii Band, 3 Heft 

 (Leipzig). — National Geographic Magazine, April (Washington).— The 

 Atoll of Funafuti. Part 7 (Sydney).— Monthly Weather Review, Decem- 

 ber, 1808, and Annual Summary for 1898 (Wa.shington).— Knowledge, April 

 (High Holborn).— The Photo-Miniature, April (Dawbarn). -Transaction.* 

 of the Astronomical and Physical Society of Toronto for the Year 1898 

 (Toronto).— American Journal of Science, April (New H.-iven).— Popular 

 .\stronomy, April (Norlhficid). —Atlantic Monthly, April (Gay).— Morpholo. 

 gisches Jahrbuch, 27 Band, i Heft (Leipzig).— Agricultural Gazette of 

 New South Wales, February (Sydney).— Mimoires de la Soci«t« de 

 Physique, &c., de Genive. Tome xxxiii. Part i (Geneve). 



NO. 1538, VOL. 59] 



CONTENTS. PAGE 



A Science of the Sciences. By Prof. R. Meldola, 



F.R.S 577 



The Uganda Protectorate 579 



Our Book Shelf:— 



Elliot : "The Wild Fowl of the United States and 



British Possessions." — R. L 580 



Monck : " An Introduction to Stellar Astronomy " . 581 

 Lcib : " Electrolysis and Electrosynthesis of Organic 



Compounds."— T. E 581 



Ormerod : "Report of Observations of Injurious 

 Insects and Common Earm Pests during the Year 

 1898, with Methods of Prevention and Remedy " . 5S1 



Duff: " Notes from a Diary " 582 



Voorhees : "Fertilisers." — R. W 582 



Letters to the Editor : — 



Further Notes on Recent V'olcanic Islands in the 



Pacific— Sir W.J. L.Wharton, K.C.B., F.R.S. 582 

 Mosquitoes and Malaria. — The Manner in which 

 Mosquitoes intended for Determination should be 

 Collected and Preserved. — Ernest L. Austen . . 582 

 Sunspots and Rainfall.— Alex. B. MacDowall . . 5S3 

 Periodic Tides. — W. Bell Dawson; Prof. A. 



Wilmer Duff 5S4 



The Natural Prey of the Lion. — Kumagusu Mina- 



kata 585 



The Present Standpoint in Spectrum Analysis. By 



Sir Norman Lockyer, K.C.B., F.R.S 5S5 



Higher Commercial Education and the University 



of London. I!y Sir Philip Magnus 588 



William Rutherford. ByJ. G. M 590 



Notes 591 



Our Astronomical Column : — 



Tutlle's Cnnicl (1S119A) 595 



Tempel's Cornel (1S73 'I-) 595 



V.iriable .Star Notes 595 



Spectrum of Saturn's Kings 595 



The Sun's Mean Temperature 595 



Sources of Important Minerals. (Willi Pia^ams.) . 596 

 On the Origin of Magneto-Optic Rotation. By Dr. 



J. Larmor, F.R.S 597 



University and Educational Intelligence .... 597 



Scientific Serials 598 



Societies and Academies 598 



Diary of Societies too 



Books and Serials Received 600 



