680 
NATURE. 
[FEBRUARY 12, 1914. 
Dr. J. Sim Wallace. Pp. viii+go. 
Dental. Record.) 3s, net. 
Tabellen zur Berechnung der ‘‘ theoretischen’’ Mol- 
(London: The 
refraktionen organischer Verbindungen. By K. v. 
Auwers and A. Boennecke. Pp. 27. (Berlin: J. 
Springer.) 1.20 marks. 
Die Entstehung des Lebendigen. By Prof. E. 
Schwalbe. Pp, 27, (Jena: G. Fischer.) 80 pfennigs. 
Dynamics. By Prof. H. Lamb. Pp. xi+344. 
(Cambridge University Press.) tos. 6d.- net. 
Kaiserliche Marine, Deutsche Seewarte. Deutsches 
Meteorologisches Jahrbuch fiir 1912. Beobachtungs- 
System der Deutschen Seewarte. Ergebnisse der 
Meteorologischen Beobachtungen.  Jahrgang xxxv. 
Pp. vii+176. (Hamburg.) 
Die Tiere der Vorwelt. By Prof. O. Abel. Pp. 
iv+88. (Leipzig and Berlin; B. G. Teubner.) 1.25 
marks, 
Die neueren Warmekraftmaschinen. I., Einftihr- 
ung in die Theorie und den Bau der Gasmaschinen. 
By Prof. R. Vater. Pp. iv+120. (Leipzig and Ber- 
lin: B. G. Teubner.) 1.25 marks. 
Leitfaden fiir das embryologische Pralxtikum und 
Grundriss der Entwicklungslehre des Menschen und 
der Wirbeltiere. By Prof. A. Oppel. Pp. vii+313. 
(Jena: G, Fischer.) 10 marks. 
DIARY OF SOCIETIES. 
THURSDAY, Fesrvary 12 
Roya Society, at 4.30,—Chemical Action that is Stimulated by Alter 
nating Currents: S. G. Brown.—The Effect of the Gangetic Alluyium 
on the Plumb-line in Northern India: R.D, Oldham.—Note on the 
Origin of Black Body Radiation: G. W..Walker.—The Transmission 
of Electric Waves along the Barth's Surface: Prof. H. M, Macdonald. 
—ransparence or Translucence of the Surface Film Produced in Polishing 
Metals: G, T. Beilby.—A Thermomagnetic Study of the Eutectoid 
Transition Point of Carbon Steels: Dr S. W. J. Smith and J. Guild,— 
Note on Osmotic Pressure ; W. R. Bousfield. 
Roya INsTITUTION, at 3.—Types and Causes of Earth Crust Folds: Sir 
Thomas H, Holland, K.C.I.E- 
ConcreTE INSTITUTE, at 7.30.—Factory Construction: P. M. Fraser. 
Rovat Society oF Arts, at 4.30.—Khorasan: the Eastern Provinces of 
Persia: Major Percy M. Sykes. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—Some Railway Condi- 
tions governing Electrification; R. T. Smith. 
FRIDAY, Fepruary 13. 
Roya INSTITUTION, at 9.—Production of Neon and Helium by Electric 
Discharge ; Prof. J. Norman Collie. 
Royat ASTRONOMICAL SOCIETY, at 5.—Anniversary Meeting. 
Puysicat Society, at 8.—The Moving Coil Ballistic Galvanometer: R. Ll. 
Jones.—Vibration Galvanometers of Low. Effective Resistance: A. 
Campbell.—Vacuum-tight Lead-seals for Sealing-in-wires in Vitreous 
Silica and other Glasses: Dr. H. J. S..Sand. 
MALACOLOGICAL Society, at 8.—Annual Meeting.—Presidential Address: 
ome Points and Problems in Geograrhical Distribution: Rev. A. H. 
Cooke. 
ALCHEMICAL SociEty, at 8.15.—Some Notes on the Doctrine of the First 
Matter, with Special Reference to the Works of Thomas Vaughan: Sijil 
Abelul-Ali. 
SATURDAY, Fesruary 14. 
Rovac InstiITUTION, at 3.—The Electric Fmissivity of Matter. I.: The 
Metals: Dr. J, A. Harker. 
MONDAY, Fepruary 16. 
Roya Society oF Arts, at 8.—Artistic Lithography: J. Pennell. 
TUESDAY, Fesruary 17. 
Roya InstiTuTION, at 3.—Animals and Plants under Domestication ; 
Prof. W. Bateson. 
ZootocicaL Society, at 8.30.—Lantern Demonstration of the Helminthes 
collected by Scott's Antarctic Expedition: Dr. R. T, Leiper and Surgeon 
Atkinson, R.N.—Observations made to ascertain whether any Relation 
subsists between the Seasonal Assumption of the “ Eclipse” Plumage 
in the Mallard (Aas boscas) and the Condition of the Testicle: C. G. 
Seligmann and S. G. Shattock.—Some Phases in the Female Reproductive 
System of the Mole (Zadfa: europaea): F. Wood Jones. —Contributions 
to a Study of the Dragon-fly Fauna of Borneo. II.: The Gomphinz 
and Chlorogomphinz: F, F. Laidlaw.—Note on an Imperfectly- developed 
Specimen of Echinus esculentus : H. C. Chadwick.—The Possible Con- 
nection between Spindle-length and Cell-volume: C. F. U. Meek. 
Royat. GEOGRAPHICAL SOCIETY, at 8.45.—Some Aspects of Travel : Rudyard 
Kipling. 
Roya ANTHROPOLOGICAL INSTITUTE (Joint Meeting with the Prehistoric 
Society. of East Anglia), at 4.—Papers by Members of the Prehistoric 
Society of East Anglia.—At 8.15.—Flint Finds in Connection with Sand ; 
R. A. Smith.—The Experimental Investigation of Flint Fracture and 
Problems of Early Man.: S. Hazzledine Warren: 
ILLUMINATING ENGINEERING SOcIETY, at 8.—Discussion on the Lighting 
of Picture Galleries.and Art Studios; Opened by Prof. S. P. Thompson. 
InsTITUTION OF CiviL ENGINEERS, at 8.—/urther Discussion; The New 
Harbour Works and Dockyard at Gibraltar: A. Scott. 
NO. 2311, VOL. 92] 
Royat Sraristicat Society, at 5.—The Census of the Empire, 1911: Its” 
Scope and some of its Results; Sir J. Athelstane Baines. 
WEDNESDAY, Feuruary 18. 
AERONAUTICAL SociETY, at 8.30.—Aérial N@vigation at Sea,” 
Rovat Society oF Arts, at 8.—The Preservation of Wood: A. Ts 
Wallis-Taylor. 
Rovat METEoroLocIcAL Society, at 7.30.—The Interpretation of the 
Results of Soundings with Pilot Balloons: Dr. W. N. Shaw.—Pilot 
Balloon Ascents at the Central Flying School, Upavon, during the Year 
1913: G, M. B. Dobson, 
THURSDAY, Frervary 10 
Roya Society, at 4.30.—Prolable Papers : The Brain of Primitive Man, 
with Special Reference to the Cranial Cast and Skull of Eoanthropus (The 
Piltdown Man): Prof, G. Elliot Smith.—Oxidases : Prof. A. J. Ewart.—A 
New Malaria Parasite of Man: Dr. J. W. W. Stephens. —Investigations 
Dealing with the Phenomena of ‘‘Clov”’ Formations.” II: The’ Formation 
of a Gel from Cholate Solutions having many Properties Analogous to 
_ those of Cell Membranes: S. B. Schryver.—The Influence of the Position 
of the Cut upon Regeneration in Gunda ulvae: D. Jordan Lloyd, 
INSTITUTION OF MINING AND METALLURGY, at 8. 
FRIDAY, FEBRUARY 20. < 
Roya INstiTuUTION, at 9.—Busts and Portraits of Shakespeare and of 
Burns: An Anthropological Study: Prof. Arthur Keith. 
InsTiTUTION OF MecHANiCcAL ENGINEERS, at 8.—Annual General Meeting. 
—Some Modern Methods of Welding; T. T. Heaton. 
InsTITUTION OF Ciy1L ENGINEERS at 8.—The Use of Reinforced Concrete 
in Connection with Dock and Other Maritime Work ; C. S. Meik. - 
SATURDAY, Fepsruaky 21. 
Rovat INSTITUTION, at 3.—The Electric Emissivity of Matter ; Dr. J: A. 
Harker. 
CONTENTS. ‘PAGE 
A German Introduction to the Study of Mimicry. 
BypoG eh eae 2 
eat books of Chemistry, ’ By G. OS 655 
Mathematics: Pure and lise 2 + «ae Ore 
Our Bookshelf .... Suge ae A Cae 
Letters to the Editor :— 
Active Nitrogen.—Prof. H, B. Baker, F.R.S.; Hon. 
Re. strutt, b Rose sre O59 
Weather Forecasting. —W. H, Dines, F.R.S. . ee ee, 
Dr. Bastian’s Evidence for Spontaneous Generation.— 
Prof. J. B. Farmer, pes Prof. Vij 
Blackman, F.R.S. .. 660 
A Possible Cause of Explosion i in Coal Mines. Prof. 
W, A. Douglas Rudge. . . 660 
The Eugenics Education Society. Edgar Schuster 660 
Origin of Argentine Wild Horses.—Dr. W. D, 
Matthew:. . : 2 66 
Specific Heats and the Periodic Law.—Dr. H. 
Lewkowitsch .. . tc ROOT 
The End- Product of Thorium,—Prof. bie Joly, 
F.RS:; J: R.-Cotter san. « oe, eR 
Fiords and Other Inlets of the Sea. ” (Mllustrated.) 
By Prof. T. G. Bonney, F.R.S. . she O62 
Educational Legislation in New South Wales, By 
J. H. Reynolds: . 0... 2.) 95 jon oe oie een 
Dr, Albert Gunther, F.R.S. a la. 0 ad hele hse Rn 
Notes .. Mae SS 
Our Astronomical Column :— 
Idetonating Fireball of January 19. ...... .. 670 
Comet 1¢13f (Delavan)... .« MIE rs te ey fo 
Dark Regions in the Sky. . . : : PP i 
A Review of Geographical Reviews. .;). . sen 671 
Wireless Telegraphy .... Mere, (3127) 
The Preservation of Nature in Germany ou 672 
The Study of the Stars. By Prof. E. C, Pickering 673 
University and Educational Intelligence. . . . . . 676 
Societies and Academies . ; .. = «. . = =e eee 
Books Received . 0 5 5... 5 Sales cp ts 
Diary of Societies. . ... .).)00 2 0 pee 
Editorial and Publishing Offices: 
MACMILLAN & CO., Ltp., 
ST. MARTIN’S STREET, LONDON, W.C. 
Advertisements and business letters to be addressed to the 
Publishers. 
Editorial Communications to the Editor. 
Telegraphic Address: Puusis, LONDON. 
Telephone Number: GERRARD 8830. 
