384 
NATURE 
[FEBRUARY 18, 1897 
DIARY OF SOCIETIES. 
THURSDAY, Fepsruary 18. 
Royat Society, at 4.30.—On the Iron Lines present in the Hottest Stars 
(Preliminary Note): J. N. Lockyer, F.R.S.—On the Significance of 
Bravais’' Formule for Regression, &c., in the case of Skew Variation : 
G. U. Yule.—Mathematical Contributions to the Theory of Evolution. 
On a Form of Spurious Correlation which may arise when Indices are 
used in the Measurement of Organs: Prof. K. Pearson, F.R.S.—Note 
to the Memoir of Prof. Karl Pearson, F.R.S., on Spurious Correlation : 
F. Galton, F.R.S. 
Roya InsTiTUTION, at 3.—Problems of Arctic Geology: Dr. J. W. 
Gregory. 
Society oF Arts, at 8.—The Mechanical Production of Cold : Prof. James 
A. Ewing, F.R.S. 
LINNEAN SOCIETY, at 8.—On certain Points in the Anatomy and Morpho- 
logy of the Nymphzacee: D. T. Gwynne Vaughan.—The Adhesive 
Discs of Ercilla spicata, Uog. : T. H. Burrage. 
CueEmIcAL Society, at 8.—The Oxidation of Sulphurous Acid by Potassium 
Permanganate : T. S. Dymond and F. Hughes.—Sodamide and some of 
its Substitution Derivatives; also Rubidamide: Dr. A. W. Titherley. 
Camera Cuvp, at 8.15. Practical Use of X-Rays: Sydney Rowland. 
FRIDAY, FEBRUARY 109. 
Royat InstiTuTION, at 9.—The Approaching Return of the Great Swarm 
of November Meteors: Dr. G. Johnstone Stoney, F.R.S. 
GEOLOGICAL Society, at 3.—Annual Meeting. 
EPIDEMIOLOGICAL SOCIETY, at 8. 
SATURDAY, FEBRUARY 20. 
Roya InstitTuTIoN, at 3.—Growth of the Mediterranean Route to the 
East: W. F. Lord. 
MONDAY, FEBRUARY 22. 
Society oF Arts, at 8.—The Industrial Uses of Cellulose: C. F. Cross. 
ImperiaL INSTITUTE, at 8.30.—The Past, Present, and Future Sugar 
Supply of the British Empire: C. A. Barber. 
Sanitary INsTITUTE, at 8.—Law relating to the Supervision of Food 
Supply : A. Wynter Blyth. 
INSTITUTE OF ACTUARIES, at 7.—Governmental Supervision of Life In- 
surance in the United States of America : Sheppard Homans. 
~ CamMeERA Cvvs, at 8.15.—Spitzbergen : E. T. Garwood. 
TUESDAY, FEBRUARY 23. 
\Rovav INSTITUTION, at 3.—Animal Electricity: Prof. A. D. Waller, 
F.R.S. 
ANTHROPOLOGICAL INSTITUTE, at 8.30. 
-INSTITUTION OF CIvIL ENGINEERS, at 8.—The Main Drainage of London: 
J. E. Worth and W. Santo Crimp.—The Purification of the Thames: W. 
J. Dibdin. : 
WRoyat PuoroGrapuic Society, at 8.—The //6 Stigmatic Lens and the 
New Astigmatic Corrector: Thomas R. Dallmeyer.—The Perfected 
Kroémskép: H. E Ives. 
Roya Victoria HALL, at 8.30,—X- and other Rays of Light: Dr. J. W. 
Waghorn. 
WEDNESDAY, FEBRUARY 24. 
Society oF Arts, at 8.—Reproduction of Colour by Photographic Methods : 
Sir Henry Trueman Wood. y f 
ZooLoGIcaL Sociery, at 8.30.—On the Nature and Origin of the Rauenthal 
Serpentine : Miss Catherine A. Raisin. (Communicated by Prof. T. G. 
Bonney, F.R.S.)—On Two Boulders of Granite from the Middle Chalk of 
Betchworth (Surrey): W. P. D. Stebbing.—Coal—A New Explanation 
of its Formation, or the Phenomena of a New Fossil Plant considered 
with reference to the Origin, Composition, and Formation of Coal Beds: 
W. S. Gresley. 
THURSDAY, FeBRuARY 25. 
\ Royat Society, at 4 30.—The following Papers will probably be read :— 
Note on the Dielectric Constant of Ice and Alcohol at very Low Tem- 
eratures: Prof. Dewar, F.R.S., and Prof. Fleming, F.R.S.—On the 
elation between Magnetic Stress and Magnetic Deformation in Nickel : 
Dr. E. T. Jones.—On the Relations between the Cerebellar and other 
. Centres (namely, Cerebral and Spinal), with especial reference to the 
Action of Antagonistic Muscles (Preliminary Account) : Dr. Max Léwen- 
thal and Prof. Horsley, F.R.S.—On the Action of Light on Diastase, and 
“its Biological Significance: Prof J. R. Green, F.R.S.—Fragmentation in 
Lineus gesserensis: A. Brown. : 
yRovac INSTITUTION, at 3.—The Problems of Arctic Geology: Dr. J. 
W. Gregory. ‘ A 
-Society oF Arts, at 8.—The Mechanical Production of Cold : Prof. James 
A. Ewing, F_R.S. : 4 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—Electric_ Interlocking 
the Block and Mechanical Signals on Railways: Reply of F. T. Hollins 
to the Discussion.—Relative Size, Weight, and Price of Dynamo-electric 
Machines: E. Wilson. y j 
SaniTarY INSTITUTE, at 8.—Sanitary Laws and Regulations governing 
the Metropolis : A. Wynter Blyth. 2 
Camera Cxup, at 8.15.—Silchester, the Result of Recent Explorations: 
H. Jones. 
FRIDAY, FEBRUARY 26. 
Rovat InsTiTuTION, at 9.—Palestine Exploration : Lieut.-Colonel C. R. 
Conder. 
NO. 1425 VOL. 55] 
InsTITUTION OF CiviL ENGINEERS, at 8.—Rockers and Expansion-Bear- 
ings as applied to Girders of Short Span: A. F. Baynhamand F, B. H. 
Dobree. 
SATURDAY, Fepsrvary 27. 
Roya InstituTIon, at 3.—The Growth of the Mediterranean Route to 
the East : W. Frewen Lord. 
BOOKS, PAMPHLETS, and SERIALS RECEIVED. 
Booxs.—On Human Nature: A. Schopenhauer, selected and translated 
by T. B. Saunders (Sonnenschein).—Klements of Theoretical Physics : Dr. 
C. Christiansen, translated by Prof. W. F. Magie (Macmillan).—Zeit-und 
Streitfragen der Biologie: Dr. O. Hertwig, Heft 2 (Jena, Fischer).— 
Beitrage zur Kenntnis der Septalnectarien: J. Schniewind-Thies (Jena, 
Fischer. Beitrage zur Lehre von der Fortpflanzung der Gewachse: Dr. M. 
Mébius(Jena, Fischer) —Kainogenesis als Ausdruck differenter Phylogene- 
tischer Energien: Dr. E. Mehnert (Jena, Fischer).—Das Botanische 
Practicum: Dr. E. Strasburger, Dritte Umgearbeitete Auflage (Jena, 
Fische:) —Wasted Records of Disease: C. E. Paget (Arnold),—Farthest 
North: Dr. F. Nansen, 2 Vols. (Constable).—Physics, an Elementary Text- 
Book for University Classes: Dr. C. G. Knott (Chambers).—Hand- 
book for Mechanical Engineers: Prof. H. Adams, 4th edition (Spon).— 
Recuei! de Procédés de Dosage: Prof.G. Arth (Paris, Carré).—Massachu- 
setts Institute of Technology, Boston, Annual Catalogue, 1896-97 (Cam- 
bridge, Mass.).—Report of the Commissioner of Education for the Year 
1894-5, 2 Vols. (Washington). 
PampHLETs.—Photography as a Hobby : M. Surface(Lund).—Geological 
Literature added to the Geological Society's Library during the Year ended 
December 31, 1896 (Geological Society).—Tabellen fiir Gasanlysen, &c. : 
Prof. G. Lunge (Braunschweig, Vieweg). 
SeRIALs. — Engineering Magazine, February (Tucker). — Quarterly - 
Journal of the Geological Society, Vol. liii. Part 1, No. 209 (Longmans).— 
General Index to the First Fifty Volumes of the Quarterly Journal of the 
Geological Society, Part 1 (Longmans).—Bulletin de l’'Académie Royale 
des Sciences, &c., de Belgique, 1896, No. 12 (Bruxelles).—Minnesota 
Botanical Studies, Bulletin No. 9 (Minneapolis).—Journal of the Franklin 
pesetute, February (Philadelphia).—American Naturalist, February (Phila- 
elphia). 
CONTENTS. PAGE 
Our Marketable Marine Fishes. By Prof. W. A. — 
Herdman, F..RS.) ees =. «a a eee 
‘The Life of James'CrolieBy FE. P..C. . . - saepemeegoe 
Elementary Meteorology . Aono os 363 
Our Book Shelf :— 
Weisbach and Herrmann : 
“*The Mechanics of Pump- 
ing Machinery ” 5 0 
Bee ke 364 
Heawood ; ‘‘ Geography of Africa”. . . . . . . . 364 
Qliver : “‘ Crags and Craters: Rambles in the Island 
of Réunion." —L Gai... se Oy 
“« Operator” : ‘* Everybody's Guide to Photography” 365 
Graham: ‘‘Is Natural Selection the Creator of 
Speciesi?”?. = eames 5 >) 365 
Letters to the Editor:— 
The Force of a Ton.—Prof. A. G. Greenhill, 
F.R.S, «. 0. Gee ol = tra 
Symbols of Applied Algebra.—C. S. Jackson. . . 366 
Equilibrium of a Cylindrical Shell. (W2th Diagram.) 
Thos, Alexandextemer.. .- :. . < * Gemma 
Oysters and Copper.—W. F. Lowe; Prof. W. A. 
Herdman; FoRiSamte ns. APs fois BID 
Immunity from Snake-Bite.—R. C. T. Evans . .- 367 
Subjective Colour Phenomena. By Shelford Bid- 
well, F.R.S.. _.. . (MBM ess oo) ote Cog 
A National Physical Laboratory ......... 368 
Wotes:-. 6 ss, eee 6. (o> 0) fe Goes 
Our Astronomical Column:— 
Prizes in Astronomynme - 3): F< 373 
Double;Star)Measiicesiememes: 2 3). < -! oy (rennin 373 
Lunar PhotographSiememtem: = 5 =), s\temepiente 373 
Report on the Coral Reef at Funafuti. (Wzth Dia- 
grams.) By Prof. W. J. Sollas, F.R.S... .. . 373 
The Institution of Mechanical Engineers. . . . . 377 
Dr. Yersin, and Plague Virus. By Mrs, Percy 
Frankland’. . 0). 3B... ws 3) eee 
The ‘ Bazin” Rollersieeteete. i. .° +, +) sO 
University and Educational Intelligence .... . 380 
Scientific'Serials {ewe fe) ss oa eee 380 
Societies and Academiesy. ©. 2... 5) ).9 ome. BSE 
Diary of Societies" ememee Aes |... em Od 
Books, Pamphlets, and Serials Received ..... 384 
