448 



NATURE 



[June 2, 1921 



Child-Stbdi- Societi (at Royal Sanitary Institute), at 6. 



UoTAL Institute or British AECHiiiiCTS, at 8.— H. M. Fletcher : 

 Building a House. . , „ , , ,-, 



Chemical Society, at 8.— H. King : DerivatiTCs of Sulphur in Oom- 

 meroial Salvarsan. Part I.— S. Glasstone : Physical Chemistry of 

 the Oxides of Lead. Part I. The Solubility of Lead Monoxide.— 

 VI. O. Forster and W. B. Saville : Studies in the Camphaae 

 Series. Part XXXIX. ^'•Aminophenylaminooamphor (Camphoryl- 

 />phenylenfdiamine).— K. Stratton and J. R. Partington: Latent 

 Heats of Fusion. Part I. Benzophenone, Phenol, and Sulphur.— 

 G. '1. Alorgan and H. D. K. Drew : Researches on Residual Affinity 

 and Co-ordination. Part V. Gallium Acetylacetone and its 

 Analogues.— J. C. Thomlinson : Analysis of Cresol Disinfectants. 

 — G. X. Morgan and D. Webster : Diazo-derivatives of 4-amino- 

 plienyl - 4'-methvlbenz - 2/ : ''-thiazole {Dchjdrothio-}>-toluidine). — 

 A. K. Macbeth and D. D. Pratt: The Labile Nature of the 

 Halogen Atoms in Substituted Nitromethanes.- K. G. Naik : The 

 Formation and Properties of Dithioketones (RjC : S : S) and 

 Dithioethers (RaS : S). Part II.— K. G. Naik: The Formation 

 and Properties of Dithioketones (RgC : 8 : S) and Dithioethers 

 (R2S:S). Part III. Interaction of Sulphur Monochloride with 

 Organic Compounds containing the grouping 



— CO-CHi-CO— CH2— CO— . 

 K. G. Naik : The Formation and Properties of Dithioketones 

 (RgC : S: S) and Dithioethers (B28 : 8). Part IV. Interaction of 

 Sulphur Monochloride with Organic Compounds containing 

 —CO — CH2— CO — grouping, forming the Part of a Closed Ring. — 

 K. 6. Naik : The Formation and Properties of Dithioketones 

 (it,C:S:S) and Dithioethers (RgS : S). Part V. Nitration of 

 Dithioketones and Dithioethers.— K. G. Naik : Interaction of 

 Sulphur Monochloride with Organic Acid Amides. — S. J. Lewis 

 and F. M. Wood : A New Adjustable Thermostat for all Tem- 

 peratures between 0° and 100° .—H. Burton and J. Kenner : The 

 Influence of Nitro-groups on the Reactivity of Substituents in 

 the Benzene Nucleus. Part III. The Partial Reduction of the 

 Dinitrotoluenes bv Stannous Chloride and Hydrochloric Acid. — 

 J. Kenner and E. Witham : The Influence of Nitro-groups on 

 the ReactiTity of Substituents in the Benzene Nucleus. Part IV. 

 The Condensation of Ethyl 3- and 5-nitro-o-Chlorobenzoates with 

 Hydrazines. 

 SocroLoaiCAL SociEir (at 65 Belgrare Road), at 8.15. — Prof. Aber- 

 crombie : The Municipal Survey of Sheffield. 



FB-WAY, June 3. 



RoTAL SociETT or MEDICINE (Laryngology Section) (Summer Meet- 

 ing), 10 to 1. 



Association or Economic Biologists (in Botanical Lecture Theatre, 

 Imperial College of Science), at 2.30.— F. L. Engledow : Methods 

 of Increasing Yield in Crop Plants. — C. B. Saunders : Some 

 Problems of Seed Testing.— W. Brown : The Physiology of In- 

 fection. 



Royal Society op Teopical MEniciNE and Htoikne (at 11 Ohandos 

 Street, W.l) (Adjourned Meeting), at 5.— Lt.-Col. H. Kirkpatrick : 

 Some Points on Trachoma.— C. Franfa : An Early Portuguese 

 Contribution to Tropical Medicine. 



Royal Photographic Socirt or Gbeat Bkitain, at 8. — M. Adams : 

 Eyes in Portraiture. 



Royal Institution or Great Beitain, at 9.— Dr. L. Huxley : 

 Chronicles of the CoynhUI, 



SATURDAY, 3v^ 4. 

 Royal Institution or Gheat Bbitain, at 3. — Dr. R. S. Rait : 



Scotland and France. 



MONDAY, June 6. 

 TiCToniA Institute (at Central Buildings, Westminster), at 4.90. — 



Rev. Prebendary H. E. Fox : The Roman Wall in North Britain. 

 Institute of Actuaries (Annual General Meeting), at 5. 

 Royal Institution or Great Britain, at 5. — General Meeting. 

 Royal Institute of British Architects, at 8. 

 Society of Chemical Industry (London Section) (at Chemical 



Society), at 8.— Dr. L. Levy: Industrial Respirators. — Prof. 



K. G. Naik: The Gold and Silver Thread Industry in India. 

 Royal GEOCiRAPHiCAL Society (at ,5olian Hall), at 8.30.— E. Teich- 



man : Journeys in Kam. 



TUESDAY, June 7. 



Royal Horticultural Society, at 3. 



Royal Institution or Great Britain, at 3. — Sir James Fraser : 

 London Life : Time of Addison. 



Medico-Psychological Association or Great Britain and Ireland 

 (at Maudsley Hospital, Denmark Hill), at 4.30.— Sir Frederick 

 Alott : Second Maudsley Lecture. 



Zoological Society of London, at 5.30.— Dr. F. M. Chapman : The 

 Distribution of Bird-life in the Urubamba Valley of Peru.— 8. 

 :\rauRk : New Indian Drilid Beetles.— Prof. J. P. Hill : Exhibition 

 of Some Marsupial Embryos, especially the Koala and the 

 Wombat.— R. I. Poeock : The External Characters of the Koala 

 (Phascolarctos)and Some Related Marsupials. — Dr. C. F. Sonn- 

 tag : The Comparative Anatomy of the Koala (Phascolaretos 

 cinereus) and the Vulpine Phalanger (Trie^oiurus vulpecula). 



WEDNESDAY, June 8. 



British Science Guild (Annual Meeting) (ixt Goldsmiths' Hall, 

 Foster Lane) . at 3.— Lord Montagu of Beaulieu : The Work of 

 the Ouild.— The Dean of St. Paul's : The Road to Ruin and the 

 Way Out.— Sir Richard A. S. Redmayne : The Importance of 

 Research in Promoting the Development of the Mineral Industries. 



Geological Society of IjOndon, at 5.30. — Dr. W. Fraser Hume : 

 The Relations of the Northern Red Sea and its Associated Gulf 

 Areas to the " Rift " Theory. 



NO. 2692, VOL. 107] 



Institution of Electrical Engineers (Wireless Section) (at Savoy 

 Place), at 6.— Prof. J. S. Townsend : Electric Oscillations along 

 Straight Wires and Solenoids. 



THURSDAY, June 9. 

 Institution of Mining Engineers (at Geological Society), at 11. — 

 Third Report of the Committee on " The Control of Atmospheric 

 Conditions in Hot and Deep Mines." — J. P. Rees : Observations 

 of Temperature and Moisture in Deep Coal-min«B. — Prof. H. 

 Briggs : Characteristics of Outbursts of Gas in Mines. — H. C. 

 Harrison : The Use and Distribution of Shale-dust in Mines. 

 The following papers, which hav« already appeared in the 

 Transactions, will be discussed :— A. E. Beet and A. E. Findley : 

 The Better Utilisation of Coking Slack.— J. I. Graham: The 

 Normal Occurrence of Carbon Monoxide in Coal-mines. — T. L. 

 Galloway : An Improved Method of Determining the Relative 

 Directions of Two Reference-lines or Bases for Mining Surveys. 

 — E. Bury, W. Broadbridge, and A. Hutchinson : Froth Flotation 

 as Applied to the Washing of Industrial Coal. 



Institute of Pathology and Research (at St. Mary's Hospital), at 

 4.30.— Dr. H. Head : Release of Function in the Nervous System. 



Royal Society, at 4.30.— Probable Papers.— Prof. C. 8. Sherrington : 

 Break-shock Reflexes and " Supramaximal " Contraction-response 

 of Mammalian Nerve-muscle to Single-shock Stimuli. — R. J. Lud- 

 ford and J. B. Gatenby : Dictyokinesis in Germ Cells, or the 

 Distribution of the Golgi Apparatus durine Cell Division.— Dr. 

 F. W. Edridge-Green : The Effect of Red Fatigue on the White 

 Equation.— E. Ponder : A Method for Investigating the Hsemolytic 

 Activity of Chemical Substances.— W. H. Pearsall : The Develop- 

 ment of Vegetation in the English Lakes, considered in Relation 

 to the General Evolution of Glacial Lakes and Book Basins. 



London Mathem.atical Society (at Royal Astronomical Society), 

 at 5.— M. J. Conran : Curvature and Torsion in Elliptic Space.— 

 J. L. 8. Hatton : The Inscribed, Circumscribed, and Self- 

 conjugate Polygons of Two Conies.— M. J. M. Hill: The 

 Differential Equations of the First Order derivable from an 

 Irreducible Algebraic Primitive.— F. S. Macaulay : Note on the 

 Resultant of a Number of Polynomials of the Same Degree. 



Royal College or Physicians or London, at 5. — Dr. F. L. (Jolla : 

 The Objective Study of Neurosis (Croonian Lecture). 



Optical Society (at Imperial College of' Science), at 7.30.— H. I^e: 

 Achromatism.- W. L. Custnnce : Demonstration of the Sooiet* 

 Genevoise Universal Measuring Machine. 

 FRIDAY, June 10. 



Royal Society of Arts (Indian Section), at 4.30.— Sir George Sey- 

 mour Curtis : The Development of Bombay. 



Royal Astronomical Society, at 5. . 



Physical Society of London (at Imperial College of Science), 

 at 5.— Sir Ernest Rutherford : The Stability of Atoms (Lecture). 



Royal Institution of Great Britain, at 9.— Dr. A. G. Webster: 

 Absolute Measurements of Sound. 



CONTENTS. PAGE 



The Metric System and World Trade . 4»7 



Lamarckism Unashamed. ByJ. A. T 4^9 



Dyes and Dyeing. By Dr. J. Huebner 421 



Time and Space. By J. F. T 422 



Our Bookshelf 422 



Letters to the Editor:— 



Earth-worms, Mud-worms, and Water-worms. — Sir 

 E. Ray Lankester, K.C.B., F.R.S. . . . . . 424 



Biological Terminology. —Sir G. Archdall Reid, 



K.B.E 425 



The Great Sun-.spot Group and Magnetic Disturb- 

 ances, May 8-21.— Father A. L. Cortie, S.J. . 426 

 The Reparation Act and Scientific Research.— J. S. 



Dunkerly • • . 427 



The Cosmology of Dante. {^Illustrated.) By Dr. 



J. L. E. Dreyer .... 428 



The Natural History of Cultivated Plants 430 



Obituary : — 



Prof. E.J. Mills, F.R.S. ByJ. M. T 432 



Notes 434 



Our Astronomical Column : — 



Pons-Winnecke's Comet ... . 43° 



Speculations on the Formation of Spiral Nebul;e . . . 43° 



The Companion of a HercuHs 43° 



Administration of Scientific Work ..... 439 

 New Technical Applications of an Electrostatic 



Principle .... 439 



Dalton and Atomic Symbols • ■ 440 



The Melbourne Meeting of the Australasian 



Association. II 44© 



University and Educational Intelligence ... 442 



Calendar of Scientific Pioneers 444 



Societies and Academies 444 



Books Received 447 



Diary of Societies 447 



