384 



NA TURE 



[February 20. 1902 



fiivinR the greatest variation of resistance when exposed to the 

 Hertzian waves. — The application of thermal galvanometers to 

 the study of electric wave*, by M. L. de Broglie. — The tubes of 

 force of the magnetic field rendered visible by means of the 

 kathode rays, by M. II. Pellat. In an intense magnetic field, 

 the bundle of kathode rays which escapes from a kathode in the 

 form of a plateau corresponds exactly to the tube of magnetic 

 force having for its base the surface of the kathode. — On the 

 condensation of true acelylenic hydrocarbons with aldehydes : 

 the synthesis of secondary acetylene alcohols, by MM. Ch. 

 Moureu and II. Desmots. The sodium derivatives of the 

 acetylene hydrocarbon react readily with aldehydes in ethereal 

 solution at - 5° C. The method is perfectly general, and ten new 

 alcohols of this type are described. — On some iodophenols, by 

 M. P. Hrenans. — The action of crystallised arsenic acid upon 

 pinene, by M. P. Genvresse. Arsenic acid does not act as an 

 oxidising agent towards pinene as was expected, the principal 

 products being either pinene possessing a different smell from the 

 original or a terpinene, according to the proportion of arsenic 

 acid employed. — The vascularisation of the suprarenal bodies in 

 the dogfish, by M. Ed. Cirynfeltt.— On Mcnabfa veneimla the 

 roots of which furnish the Tanghin de A/enabe^ or Sakaltn.'es^ 

 the poison of the <jrdeal, also called Kissotunpa or Kiinan^a in 

 Madagascar, by M. Ed. Ileckel. — On the effects of commensal- 

 isni of an Amyloiiiyces and of a Microcociiis^hy M. Paul Vuillemin. 

 The association of Mucor rotixiaiitis and a jMicrocoicm feeding 

 on sugar allows of the development of the bacterium on potato. 

 — The discovery of a new horizon of a lacustral fossiliferous 

 limestone interposed lietween the Miocenes of Ariege, by M. G. 

 Vasseur. — On the alkaline granite of Filfila, Algiers, by M. 

 Pierre Termier. — A new method of local anoesthesia in dentistry, 

 by MM. L. R. Regnier and Henry Didsbury. The researches 

 of M. d'Arsonval on the anaesthetic effects produced by currents 

 of high frequency and high intensity have been applied with 

 .success to the purposes of practical dentistry.— An apparatus for 

 the blind, by M. Dussaud. 



GOTTINGEN. 



Royal Society of Sciences. — The Nachrichten (physico- 

 mathematical section), part ii., 1902, contains the following 

 memoirs communicated to the Society ; — 



July 20, 1901. — A. von Koenen : on the correlation of the 

 Norlh-(;erman Lower Chalk. — J. Orth : contributions from the 

 Gottingen Pathological Institute : (a) cetiology of caseous 

 pneumonia ; {b) tubal gravidity ; {c) the lower jaw in so-called 

 agnathia ; {d) pseudo-tuberculosis ; (t) soft cutaneous naevi ; 

 (/) epidermal ingrowths in cancer; (g) pericardial cicatrices; 

 (/;) renal degeneration after creliotomy ; (i) the testicular elastic 

 tissue in tuberculosis and syphilis ; {j) angiomatous changes in 

 the liver after poisoning by coumarin. — ^J. Orth : histology and 

 X'liology of pulmonary phthisis. 



November 8, 1901. — W. Kaufmann : electric and magnetic 

 deflexion of the Becquerel rays, and the apparent mass of elec- 

 trons. — A. Brill : on the representation of an algebraic tortuous 

 curve by one equation. 



DIARY OF SOCIETIES. 



THURSDAY, Ffi^kuarv 20. 



RovAL SOCIKTV, at 4.30.— On Pure Cullures of a Ureiline I'liccmiti dis- 

 /l<-rja(Eriks.i): Prof. "H. M. Ward, F.R.S —On the Physics and Physi- 

 olozy of Protoplasmic Streaming in Plants : Dr. A. J. Ewart.— On a P.lir 

 of Ciliated Grooves in the Brain of the AmmociL-te, apparently serving to 

 promote the Circulation of the Fluid in the Brain-Cavity : Prof. A. Dendy. 

 — On the Interpretation of Photographic Records of the Response of 

 Nerve obtained with the Capill.ary Electrometer : (!. J. Burch, F.R S.— 

 Note on the Anomalous Dispersion of Sodium Vapour : Prof. W. H. 

 Julius. 



LiNNEAN SociETV, at 8. — (i) On some Gasteropoda (/.7W«i7/rt7c^«j and 

 CItitra) from Lake Tanganyika, with the Description of a New Genus ; 

 (2) On the Nyassa Vivipara and its Relationship to Ncotbauma : Miss L. 

 Digby.— On the Fruit of Metocarina bambusoules^ an Exalbuminous 

 Grass: Dr. A. Stapf. — On a West Indian Sea Anemone, Bunodeopsis 

 globulifcni : Dr. J. E. Duerden. 



FRIDA Y, Februarv 21. 



RovAL Institution, at o. — Musical and Talking Electric Arcs: W. 

 Duddell. 



Institution of Mechanical Engineers, at 8. — Annual General 

 Meeting. Followed by discussion on Modern Machine Methods, with 

 R:|>'y by the Author, H. L. F. Orcutt. .and, time permitting. Fencing 

 of Steam- and Gas-Engines : H. D. Marshall.- Fencing or Guarding 

 M.ichinery used in Textile Factories : S. R. Piatt. -Protection of Lift- 

 Shafts, and Safety Devices in CDnnection with Lift-Doors .and Con- 

 trolling Gear: H. C. Walker.— Guarding Machine Tools. W. H. 

 Johnson. 



Gbolouicai. SociETV, at 3 —.Annual General Meeting. 



EPIDE.M10LOG1CAL Society, at 8.30. 



SATURDAY, Fpbruakv 22. 

 RovAL Institution, at 3.— Some Electrical Developments : Lord Ray- 



leich. F.R.S. 

 Essex Field Cli'b (at Essex Museum of Natural History, Stratford), 



at 5.30.— George Edwards, the Stratford Naturalist : John Aver)'. 



— Protective Resemblance, Warning Colours and Mimicry, some New 



Illustrations of well-known Principles: Prof. E. B. Poulton, F.R.S. 

 MONDA y, FiuiRUARv 24. 

 Royal Geographical Societv, at 8.30. — The Voyage of the Antarctic 



Ship Dncr.'ery: The President ; G Murray, F.R.S. ; and Dr. H. R. Mill. 

 Society op Arts, at 8.— Personal lewellery from Prehistoric Times: 



Cyril Davenport. 

 Imperial Institute, at 8.30.— British Columbia : Hon. J. H. Turner. 

 Institute op Actuaries, at 5.30. — Some Notes on the Net Premium 



Method of Valuation, as affected by recent Tendencies and Develop- 

 ments : S. G. Warner. 



TUESDA Y. February 25. 

 Royal Institution, at 3.— The Temperature of the Atmosphere : W. N. 



Shaw, F.R.S. 

 Institution of Civil Engineers, at i.— Paper to be further discusstd : 



Electrical Traction on Railways: W. M. Mordey and B. M. Jenkin. 

 Society for the Promotion or Hellenic Studies, at 5.— Humour in 



Greek Art : A. H. Smith. 



iVEOffESDAY, February 26. 

 SociKTVop Arts, at 8.— Recent Inventions in Wearing Machinery: Prof. 



Roberts Beaumont. 

 Geological Society, at 8.- On some Gaps in the Lias: E. A. Walford.— 



The Origin of the River-System ofSouth Wales and its Connection with 



that of the Severn and Thames : A. Strahan. 



THUKSDAY, February 27. 

 RoVAL Society, at 4.30. 

 Society op Arts at 4.30. — The Industrial Development of India 



Nilkanth B. W.agle. 

 Lvstitution of Electrical Enginpfrs, at 8. — Electric Shock and 



Legislation Ihereon : Major-General C. E. Webber, C.B., R.E.-Eleclric 



Shocks: F. B. Aspinall— Electric Shocks at 500 volts (illustrated by a 



Demonstration of 500 volts) : A. P. Trotter. 



FRIDAY, February 28. 

 Royal Institution, at 9.— Gold Mining in Klondyke : Prof. H. .A. 



Miers, F.R.S. 

 Institution OF Civil Engineers, at 8.— Indicating High-Speed Steam- 



Engines : A. M. Arter. 



NO. 1686, Vol. 65] 



CONTENTS. PAGE 



Planarians and their Allies ydx 



Primary Batteries. By M. S 362 



A Memoir on Moraines. By T. G. B 362 



Chemistry of Paints 363 



Our Book Shelf:— 



Price: " Handbook of Sanitation ' 364 



Schuster and Lees : " Advanced Exercises in Practical 



Physics."— S. S 364 



Hemsalech : ," Recherches Experimentales sur les 



Spectres d'Etincelles."— C. P. B 365 



Jordan : " Moral Nerve and the Error of Literary 



Verdicts " 365 



Lush : " Domestic Economy for Scholarship and 



Certificate Students" 365 



Letters to the Editor : — 



Huxley's Review of the "Vestiges of Creation." — 



Francis Darwin, F.R.S 366 



Birds atl.icking Butterflies and Moths. — A. H. 



Hamm ; C. G. Seligmann; Howard Fox . . 366 

 King Ogs Bed. --T. B. S. ; H. G. Wells .... 366 



The Severn Bore. — E. W. Prevost 366 



.Squilla desmaresti. — Prof. F. Jeffrey Bell .... 366 

 The Moon and Thunderstorms. (lFi//t Diagram.] — 



Alex. B. MacDowall 367 



Progressive Variation in the Malayan Peacock- 

 Pheasant.— F. Finn 367 



The Inheritance of Mental Characters. — Prof. 



T. D. A. Cockerell 367 



Iceland. By Sir Arch. Geikie, F.R.S 367 



Nature Study in Schools 369 



A Doubtful Development of Locomotive Engineer- 

 ing. By N.J. L 370 



Notes 370 



Our Astronomical Column : — 



The New Bruce Speclrograph for theYerkes Refractor 374 

 The Stratifications of Hydrogen, {///ttstra/ed.) By 



Sir William Crookes, F.R.S 375 



Scientific Work of the German Antarctic Expedi- 

 tion 37S 



The Use of Anatomical Characters in the Identifica- 

 tion of Wood. (/Itustraitd.) By Herbert Stone . 379 



Conference on School Gardens 380 



University and Educational Intelligence 380 



Scientific Serial 3S1 



Societies and Academies 381 



Diary of Societies 384 



