26 NATURE 
} 
[Marcu 7, 1912 
Monographien einheimischer Tiere. Band _ iii. 
Hydra’ und die Hydroiden, zugleich eine Einfuthr- 
ung in die experimentelle Behandlung biologischer 
Probleme an niederen Tieren. By Dr. O. Steche. 
Pp. vit162. Band iv. Die Weinbergschnecke. 
Helix pomatia, L. By Prof. J. Meisenheimer. Pp. 
iv+igo. (Leipzig: Dr. W. Klinkhardt.) Each, 
4 marks. 
A History of British Mammals. By G. E. H. 
Barrett-Hamilton. Part x. Pp. 169-216. (London: 
Gurney and Jackson.) 2s. 6d. net. 
By R. Sewell. Pp. xii+ 187. 
(London: G, Allen and Co., Ltd.) 31s. 6d. net. 
A History of the Birds of Colorado. By: W.. L: 
Sclater. Pp.: xxiv+57 (London: Witherby and 
Co.) 21s. net. 
Are there Equinoctial Storms ? 
Marine Barometer in American Waters. 
Morrison. Pp. 21+30. (New York: W. 
and Co.) 
Synthese der Zellbausteine in Pflanze und Tier. 
By Prof. E. Abderhalden. Pp. xi+128. (Berlin: 
J. Springer.) 3.60 marks. 
Filariasis and Elephantiasis in Fiji: being a Re- 
port to the London School of Tropical Medicine. By 
P. H. Bahr. Pp. viii+192. (London: Witherby and 
Co.) 6s. net. 
Fergusson’s Percentage Unit of Angular Measure- 
Indian Chronography. 
Development of the 
By J. H. 
F. Sametz 
ment, with Logarithms; also a Description of his 
Percentage Theodolite and Percentage Compass. By 
J. C. Fergusson. Pp. Ixvii+467. (London: Long- 
mans and Co.) 3I. 3s. net. 
Milk and fe Public Health. By Dr. W. €. 
Savage. Pp. xviiit+459. (London: Macmillan and 
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Leisure Hours with Nature. By E. P. Larken. 
Pp. xv+263. (London: T. Fisher Unwin.) 2s. 
Pflanzengeographische Monographie des Bernina- 
gebietes. By Dr. E. Rtibel. Pp. x+615+ plates. 
(Leipzig: W. Engelmann.) 36 marks. 
DIARY OF SOCIETIES. 
THURSDAY, Marcu 7. 
Rovat Society, at 4.30.—(1) On the Devitrification of Silica Glass ; (2) The 
Volatility of Metals of the Platinum Group: Sir William Crookes, O.M., 
For. Sec. R.S.—A Critical Study of Spectral Series. II,—The Prin- 
cipal and Sharp Sequences and the Atomic Volume Term: Prof. W. M. 
Hicks, F.R.S.—An Optical Load-extension Indicator, together with some 
Diagrams obtained therewith: Prof. W. E. Dalby.—(1) The Transmission 
of Cathode Raysrthrough Matter; (2) The Velocity of the Secondary 
Cathode Particles ejected by the Characteristic Réntgen Rays : i 
Whiddington.—On the Voltage Effect in Selenium : E. E. Fournier d’Albe, 
Linnean Society, at §.—Internodes of Calamites: Prof. Percy Groom. 
—Coloured Drawings of Barbados Plants: Miss Ethel M. Phillips. 
—On Psyguiophyllum majyus, sp. n., from the Lower Carboniferous 
Rocks of Newfoundland, together with a Revision of the Genus and 
Remarks on its Affinities: E. A. Newell Arber.—Historic Doubts about 
Vaunthompsonia: Rey. T. R. R. Stebbing.— Living Specimens of 
Cactoid Euphorbias from South Africa: Dr. Otto Stapf. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—Tariffs for Electrical 
Energy, with Particular Reference to Domestic Tariffs: W. W. Lackie. 
FRIDAY, Marcu 8. 
Rovat Astrronomicat Society, at 5.—The Long-period Variable RT 
Cygni: A. N. Brown —The Constitution of the Solar Corona. NG 
Coronium: 1. W. Nicholson.—On a Device for Facilitating Harmonic 
Analysis and Synthesis: E. W. Brown.—The Nebula HI 159 ‘Cassiopeize : 
Dorothea Roberts.—The Real Paths of 420 Fireballs and Shooting Stars 
Observed in the British Isles 1897-1911: W. F., Denning. — Erreurs 
systématiques et probables dans Hes mesures d’Etoiles Doubles : R. 
Jonckheere.—Occultation of B.4 1189 and of Mars: Cambridge 
Observatory.—Position of Comet oBoiaate (a911g) : Cambridge Obser- 
vatory.—On Librations in Planetary and Satellite Systems: E. W. Brown. 
— The Effect of Atmospheric Dispersion on the Greenwich Photographs of 
Eros: Royal Observatory, Greenwich.—Presable Papers: A Determina- 
tion of the Frequency Law of Stellar Motions: A. S. Eddington.—A 
Tentative Explanation of the ‘‘ Two Star Streams” in Terms of Gravita- 
tion: H. H. Turner. 
MALACcOLoGIcAL Society, at 8.—The Distribution and Habits of Alopia, 
a Subgenus of Clausilia: Rev. A. H. Cooke.—A Synopsis of the Recent 
and Tertiary Freshwater Mollusca of the lifornian- Province. Part I., 
Pelecypoda and Pulmonata: H. Hannibal.—Note on the Existence of 
Two Editions of Férussa:’s Tableaux Systématiques Major M. Conolly. 
Note on Pleurotoma bipartita, Smith: E. A. Smith. 
Puysicar Sociery, at 8.—Exhibition of a ‘‘ Method of Making Capillary 
Filaments” : H. S. Souttar.—The Intensity at Points near the Principal 
NO. 2210, VOL. 89] 
Focus of an Object Glass with Symmetrical Aberration: J. Walker.— 
The Equipment of the Spectroscopic Laboratory of the Imperial College 
of Science; .Prof. A. Fowler, F.R.S. 
SATURDAY, Marcu 9. ir 
Roya InstiruTion, at 3.—Molecular Physics : Sir J. J. Thomson, F.R. . 
MONDAY, Marcu 11. 
Royat Society oF Arts, at 8. —The Loom and Spindle : 
and Future: Luther Hooper. 
Royat GEOGRAPHICAL SociETY, at 8.30.—Some New Zealand Volcanoes : 
Dr. J. Mackintosh Bell. 
TUESDAY, Marcu 12. 
Roya InsTITUTION, at 3.—Ancient Britain: Dr. T. R. Holmes. 
MINERALOGICAL SOCIETY, at 5.30.—On the Zeolites from Killyflugh and 
White Head, County Antrim: Dr. G. F. Herbert Smith and F. N, A. 
Pleischmann.—On Quartz-twins: J. Drugman.—Note on the Optical 
Properties of Mercuric Iodide: T. V. Barker.—Notes on the Minerals 
and Mineral Localities of Shropshire: Arthur Russell. 
Soctety oF DyERS anp Cotourists, at 8.—A Note on the Analysis of 
Weighted Silk: F. J. Farrell and Dr. J. N. Goldsmith.—Paper Yarn ; 
Its Production and Uses : W. P. Dreaper. 
INsTITUTION OF CivIL ENGINEERS, at 8.—Further Discussion : (z) Roller 
and Ball Bearings ; (2) The Testing of Anti-friction Bearing Metals: Prof. 
J. Goodman.—Probable Papers : The Main Drainage of Glasgow: A. B. 
McDonald and G, M. Taylor.—The Construction of the Glasgow Main 
Drainage Works :, W. C. Easton.—Glasgow Main Drainage : The Mech- 
anical Equipment of the Western Works and of the Kinning Park Pump- 
ing Station: D. H. Morton. 
‘WEDNESDAY, Marcu 13. 
GEOLOGICAL SociETy, at 8.—On the Glacial Origin of the Clay with Flints. 
of Buckinghamshire and on a Former Course of the hames; Dr, R. I 
Sherlock and A H. Noble.-—Some New Lower Carboniferous Gasteropoda *: 
Mrs. Jane Longstaff. 
Roya Society oF Arts, at 8.—Greek Sculpture: Prof. E. A. Gardner. 
THURSDAY, Makcu 14. 
Royat Socigty, at 4.30.—Probable Papers: The Effects of Ultra-Violet 
Rays upon the Eye: Dr. E. K. Martin.—On the Presence of Radium im 
some Carcinomatous Tumoors: Dr. W. S. Lazarus-Barlow.— An Improved 
Method ior Opsonic Index Estimations involving the Separation of Red 
and White Human Blood Corpuscles: C, Russ.—The Electrical Con- 
ductivity of Bacteria, and the Rate of Inhibition of Bacteria by Electric 
Currents: Prof. W. M. Thornton.—A Critical Study of Experimental 
Fever: E. C. Hortand W. J. Penfold.—Certain Results of Drying Non- 
Sporing Bacteria in a Charcoal Liquid Air Vacuum: S_ G. Shattock andi 
L. S. Dudgeon. 
Roya Society oF ARTs, at 4.30.—The Indian Census for r911: E. A, 
Gait. 
MATHEMATICAL SOciETY, at 5.30.—The Cubic Surface as a Degenerate 
Quartic: G. T. Bennett. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8. 
FRIDAY, Makcu 1s. 
Roya InsTITUTION, at 9.—The Origin of Radium: IF’ Soddy, F.R.S. 
INSTITUTION OF MecHANICAL ENGINEERS, at 8.—The Diesel Oil Engine, 
and its Industrial Importance particularly for Great Britain: Dr. 
Rudolf Diesel. 
INSTITUTION OF CivIL ENGINEERS, at 8.—The Heat Value of Fuels: 
A. E. Gladwyn. 
Past, Present 
SATURDAY, Marcu 16. 
Royat InsTITUTION, at 3.—Molecular Physics : Sir J. J. Thomson, F.R.S- 
CONTENTS. PAGE 
Sea Fisheries. By Stephen ee ee Se I 
Design in Illumination. . Re Benin) 3 
The Face of the Earth. By ale WVIGES g 
Darwinism in the Light of Modern Research, By 
Ay K:.-.. Ei WAI i, 3. = iay SS 4 
Our Book Shelf a 5 
Letters to the Editor :— 
Heredity.—Dr. E. S. Goodrich, F.R.S. . . ee: 
Mars and a Lunar Atmosphere. mil T. Whitmell . 6 
The Teaching of Mathematics.—Prof. H. S. Carslaw; 
IN SC RN 6 
The Isothermal ‘Layer. — Commander Campbell 
Hepworth : 7 
St. Elmo’s Fire. ay) McV. M.; E. Gold. i 7 
Earthworms and Sheep-rot. —Rev. Hilderic Friend § 
Meteor-showers.—F.R.A.S.; John R. Henry . $ 
The American Lobster. (Jdlustrated.) By W. 7 Cc 9 
Scientific Research in the Sudan. ree 10 
Notes. (/élustrated.) : 12 
Our Astronomical Column ;— 
Brilliant White SpotsoniMiarse yaa) e - ..ea 
Cometary, Phenomena a scene weiner RE ck 
The Antarctic Campaign. Ue Map.) By Dr. 
William S. Bruce _ . oo rps Rae . oe eee 
Fisheries of Bengal By RABY 20. 
Disintegrating Bacteria and Other Organic Cells. 
(Zllustrated.) By J. E. Barnard .. . Perma 4 04 
University and Educational Intelligence ...... 22 
Societies: andj;Academies”. (c+) 2). = 3. Sf eee 23 
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