4?6 



NA TURE 



[March 7, 1S95 f 



the cxcrciory fitjmem in ihe epi(iormi«, hut when necessary, 

 take up and digest for the l>enefit of the organism all the accu- 

 muliied reS' rve sobslancrs. — Valural and artificial proto- 

 -.ihylline, bv M. C. Timiriaz-ff. — On sime applications of 

 'Oceanography to Geology, by M. J. Thoulel. 



DIARY OK SOCIETIES. 



LoNi'ON. 

 THUnSDA Y. March 7. 



Rqval SociKTV. at 4.30. — The Rubies of Kurma and Associated Minerals: 

 iheir M--k1c o( Occunencc. t )riKin. and Mciamorphoscs. A Contribution 

 to the History- of Corundum C. B rrington Brown and Pr»f. Jiidd, 

 F.R.S —I he Action of Heat upon Ethylene, Pan II. Prof. V. B. L-wes. 

 —On the Mea>urenient of Pressures by the Crusher-Gauge : W. Kcllner 

 and W. H Deering. 



SociBTV OF An iiouariss. at 8,30. 



LlNNEAS SoclBTV. at 8 — On the Genus Cupressus' Dr. Maxwell T. 

 Maflers, F R.S. — On the Insects, Ara-hnida. and Crustacea collected 

 during Mr. T. Bent's Extiedition to Hadramant, Arabia: W. F. Kirby, 

 Chas Gahan, and R. I. Pocock. 



CHEMtCAL Socii;tv, at S.— DimethvlUetohexamethylcnc: Dr. Kippine. — 

 The Use of Ilinum Thiosulph.lte in Standardising Iodine : Dr. Plimpton 

 and T. C. Chortcy. — 1 he Magnetic Rotatinn of the Plane of Polarisation 

 of Light by Liquids: J.W. Rodger and W. Watson. — Irimcthylsuccinic 

 Add: Prol. W. H. Perkm. F.K.S., and Dr. W. Bone. 

 FRtDA Y, March 8. 



RoVAL iNSTlTUTtoN, at 9.— The Physical Work of Von Helmholtz : Prof. 

 A. W. Rflcker, F.R.S. 



PllvsICAL ^oclErv. at 5. — Exhibition, by Mr Naber, of a Voltameter.— 

 (t) The Fo -al Htliottat; (a) An Improvement in Siderostats Dr. G. 

 Johnttone Stoney, F. R S. Ota New Harmonic Analyser : G. L*. Yule. 

 — t>n the Electromagnetic Field ; H. N- .Allen. 



RoVAL AsTROsoMtCAL SociBTV, at 3. — M icrometrical Measures of the 

 Diameter of the Sat-llitcs of Jupiter; Micrometrical Measures of the 

 Ball and King System of Saturn, and of the Diameter of Titan : E. E. 

 Pari.a'd.- Tran-it of Mercury, 1854 November 10 ■ \V. I-'. Gale; J P. 

 Thomson. — A List of Probably New Double Stars: k.T- A. Innes. — Double 

 Star M-a*u'cs; W. H Maw and J. Tcbbutt.— N 'tes on the Variable 

 Stars X and W Sagittx : Lieut. -(Lionel Markwick. — Note on a Su,;- 

 gested Formol Equatorial Mounting fora Modi6cd Newtonian Reflector: 

 Kev. C. 1). P. Davies,— On the Proper Motions of B.A.C. 793 and 

 Cephet 24(Hev.): W. T. Lynn. — The Wilsonian Theory and the Si any- 

 hurst Drawings of Sun-sp -ts : Kev. W. Sidgreaves. — Observations of 

 Encke's (^'imet : Royal Observatory, Greenwich. — An Apparatus tor 

 Mechanically Calculating Star C irreciions ; \V. E. Cooke. — Note on the 

 above Paper : Prof H. H Turner. 



iKSTtTUTiON OF Civtt. Enginrers. at £. — TTic Coordinate System of 

 Surveying as employed in S'juth Africa : A, Struben. 



MALACOLOOtCAL SociBTV, at 8. 



Clinical Society, at 8.30. 



SA TURD AY, March 9. 



Royal Institution, at 3. — Waves and Vibrations: Lord Rayleigh, 

 F.R.S 



RovAc Botanic Society, at 3.4.<;. 



Essex KieldClub (at Stratford), at 6.30. — Notes on the Remains of 

 Pleistocene Miinmals found in the Neighbourhood of Ch-;! nsf ,rd : E. T. 

 Newi>tn, F. K.S —Note on the Section at Chelmsford in which the Mam- 

 moth anti other Remains were discovered, November 1894: T. V. 

 Holmes. 



SUtfDAY. March 10. 



SttNDAY Lecture SociETv, at 4- — Perpetual Motion: Douglas Carnegie, 



MONDAY, March 11. 

 Royal Geographical Society, at 8 30 — Three Years' Travelling and 



Fighting in the Oingo Free .State : Captain S. L. Hinde. 

 Akfiliatc^ PHOTOCKArlllc Societies (Cordwainers' Hall. E.C.), at 8. — 



The Physics and Che <nistry of Development : Thomas Bolas. 

 Medical Society, at 8.30. 



TUESDAY. March ij. 

 Royal Institijtion, at 3. — Internal Framework of Plants and Animals : 



Prof C. Stew.nrt. 

 IttsTiTUTios fir Civil Encinbrrs, at 8.— The Kidderpur Docks, Calcutta : 



William Duff Bruce. — Note on the Movement of the Walls of the Kidder- 



pqr Dof-ki James Hrnry Ap) ,hn. 

 An"TH1I"I*olo.ical Isstiti-tk. al 8.^0. — The Changes in the Propnriiont 



of the Human B >dy during the Pen pd of Growth Dr. Wingficld Hall. — 



Notes fvn tie Lanitu.-i^e s,,ok n in Madaga-car J. T. Last. 

 Royal PiMror.KArHic Sociktv, at 8 — An Unconsidered Property of 



Photogtaphi'- Lenses: T R. Dallmcyer. 

 Royal Victoria H all (Waterloo Bridge Road), at 8. — Photographic 



Astr'iDomv : Mr. Knnbel. 

 Royal Medical ani> CHiRHHr.irAL Society, at 8 30. 

 Royal Horticultural Sociktv, at i.— The Diseases of Tomatoes and 



Vines. 



WEDNESDA Y, March 13. 

 Pharmaceutical Society, at 8 30. 



SociBTTOF Arts, at 8.— The Meat Supply of the United Kingdom: E. 

 M'mtaiue Nclwn. 



THURSDAY, March 14. 

 RoYA Society, at 4 30. 



S'KIF.TYOr ANTIVI'ARIRS.at 8.30 



Matkematical Socirtv, al 8 — The Invartanis of the Binarv f^uantic of 

 Unli'iiited Order : I'he President.— Certain tr Functinns: F H. Iacks,n. 



iNsrtTu i->N OF Electrical £n<;ineers, at 8.— The Electrolysis of Gold: 

 N. S. Keith. 



FRIDAY, March 15. 

 Royal Institution, at 9.— The Rarer Metals and their Alloys: Pr. 



Roberts-Austen, C.B., F.R.S. 

 KpiDtMioLociCAL SorlETV at 8.— The Value of Eucalyptus Oil as a Disir.- 



feciant in Scarlet Fever: Dr Joseph Priestley. 

 QuEKtiTT MlCKOsconc Club, at 3. 



SATURDAY, March 16. 

 Royal Institution, at 3.— Waves and Vibrations: Lord Rayleigli. 

 F.R.S. 



NO. 1323. VOL 51] 



BOOKS, PAMPHLETS, atid SERIALS RECEIVED. 



Books. —Elements of P.ithol.igical Histology: Dr. .\. Wcichsclbaum, 

 translated by Dr. W R Dawson (Longmans). — Le Lcman : K. A. Forel, 

 tome second (Lausanne, Rouge) — Everyt>ody*s Pocket Lawyer (Saxon). — 

 A treatise -tn Elementarv 'I rigonometry ■ Or. J. Ca^ey, new edition J 

 (Dublin. Hodg-s). — Apparcils Accessoires des Chaudicresa Vat'eur : Du- 

 dcbout and Cr neau (Paiis, G uthier-Viliar.s).— Tiaiie des Biiycles el 

 Bicycletes. C. B lurlet (Paris, GauihierViilars).— Conic Sections Dr. W. > 

 H. Besa t giK edition (Bell).— Organic Chemistry — the Katty Compounds; 

 R. L. Whilelcy (L -ngmansj. — Smithsonian Geographical T;ibles ; R. S. 

 Woodward (W.ashingt m). — Les Aurores Polaires A. .\ngot(l'aris .\lc.in). 

 — My Weat'ier-wise Conpanion: B. T. (Blackwood). — The Fauna of 

 British India, including Ceylon and Burma— Moths : G. F. Hampson, 

 Vol. 3 'Taylor and Francis). 



Pamphlets. -Index to the Literature of Didymium, 1849-1893 (Wash- 

 ington) —Rrp-^rt of S. P. ' anglcy, Secretary of the Smith on. an Institu- 

 tion, for the Vear ending June 30, 1854 (W.ishiilglon). — Rrport on ilu 

 Opcrati ,iis of the D-partment of Land Records and Agriculture. Mai't 

 Presidency, f')r the Official Vear 1803-94 (Madras) — Zwei Neuc Par.idi 

 vogcl . A. B. Meyer (Be-Iin, Friedliinoer). 



Serials.— Natural Science, March (Rail).- Cassell's Magazine, March 

 (Cass 11). — Contemporary Review, March(lsbister).— Hunianilarian. March 

 (Hutchinson). Bulletin dc la Acaddmie Royale des Sciences. &c., de Ucl- 

 gique. tis*^ Annie 3' sine, tome 29. No. i (Bruxellcs).— Zeilschrifi ' 

 PhysikalischeChemie.xvi. Band, a Heft (Leipzig. Engelinaiin) — Scribi; 

 Magazine, March (Low). — Zeitschrift lur ^atu^wisseDschafte^, 66 B.uil. 

 5 and 6 iHeft. 67 Band, I to 5 Heft (Leipzig, Pleffer).— National Review, • 

 March (Arnold). I 



CONTENTS. PAGE 



The Ancestry of the Vertebrates. By W. N. P. . 433 



A Cyclopaedia of Names 434 



Our Book Shelf:— 



Walker: " Varied Occupations in Weaving " . . . 435 



Pease: " Horoe Breeding for Farmers."— W. F. G. 435 



Hopkins; "Preparatory Physics" 43() 



Chambers: " The Story of the Stars " 43* 



" Aerial Navigation : Proceedings of thclnlernational 



Conference held at Cliicago, August, 1893 " ... 43 

 Letters to the Editor: — 



Liquefaction of Gases.— M. M. Pattison Muir . . .\y 

 Eleven-year Sun-spot Weather Period and its 



Mulii[)les — H. Helm Clayton 43< 



Abnormal .\tlanlic Waves. {IVilh Diagram.)— C. E. 



Stromeyer ....... 43; 



The Presence of a Stridulating Organ in a Spider. — 



Prof Baldwin Spencer 43! 



The SpeclruiH Top. — Dr. Dawson Turner .... 43!, 



The Age of the Earth. By Lord Kelvin, P.R.S. . 43!! 



Notes 4* 



Our Astronomical Column : — 1 



Spectroscopic Measures of Planetary Velocities . . . 44]' 



The Satellites ol Mais .' 44.i 



Eclipse of the Moon, March 11 44' 



The Nile, liy Sir Colin Scott-Moncrieff, K.C.M.G., 



C.S.I 41 



Observations of Sun-spot Spectra. {IVilh Diapam.) 



By J. Norman Lockyer, C.B., F.R.S 41 



Variation in Animals and Plants. By Prof. W. F. 



R. Weidon, F R.S 41 



Science in the Magazines 45' 



University and Educational Intelligence 45 



Scientific Serials 4- 



S'lCietiei, 4nd Academies t 



Diary of Societies 



Books, Pampolets, and Serials Received 1 



