[May 30, 1912 
Prof. W. M. 
340 NATURE 
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DIARY OF SOCIETIES. 
THURSDAY, May 30. 
Roya INsTITUTION, at 3.—X-Rays and Matter: 
FRIDAY, May 31. 
Rovat INsTITUTION, at 9. .—Icebergs and their Location in Navigation: 
Prof. H. T. Barnes. 
Puysicar. Sociery, 
telegraphy: Prof. G. 
Prof. C. G. Barkla. 
at 5.—The Calibration of Wave-meters for Radio- 
W. O. Howe.—On the Use of Heaviside’s Resist- 
ance Operators in Air-core Transformer Theory: Dr. W. H. Eccles.—The 
Move: ents of Semi-oily Liquids on a Water-surface : C. R. Darling.— 
Experiments on Surface Leakage in Alternating Electric Fields: G. L. 
Addenbrooke. 
SATURDAY, June 1. 
Roya INSTITUTION, at 3.—The Development of Meteorological Science : 
Willis L. Moore. 
MONDAY, June 3. 
ARISTOTELIAN Society, at 8.—Significance and Validity in Logic: 
‘Tanner. 
Vicroria InsTITUTE, at 4.30.—The Influence of Babylonian Conceptions 
on Jewish Thought : The Ven. Archdeacon Beresford Potter. 
Society oF CHEMICAL INDUSTRY, at 8.—The Nature of the Process of 
Oxidation (with demonstrations): H. E. Armstrong, F_R.S., and R. T. 
Colgate.—Some Present Day Aspects of the Match Industry: E. G. 
Clayton. 
InsTITUTE OF ACTUARIES, at 5. 
NO. 2222, VOL. 89] 
W. E. 
| 
| 
ZooLocicat Society, at 8.30.—The Preservation of the English Fauna: 
FE. G. B. Meade-Waldo.—1I he North Rhodesian Giraffe » R. Lydekker.— 
On the Hydrocoralline Genus Errina: Prof. S. J. Hickson.—Contribu~ 
tions to the Anatomy and Systematic Arrangement of the Cestoidea. 
VI. Onan Asexual Tapeworm from the Rodent Fiber zibe thicus, showing 
a New Form of Asexual Propagation, and on the supposed Sexual Form: 
Dr. F. E. Beddard,—Polycheta from the Pacitic Coast of North 
America. Part I. Serpulida, with a Revised Table of Classification of 
the Genus Spirorbis: Helen L. M. Pixell.—-On some New Fossil Reptiles 
from the Permian and Triassic Beds of South Africa: Dr. R. Broom. 
WEDNESDAY, June 5. 
Society oF Pusric Anatysts, at 8.—The Composition of Milk: H. D. 
Richmond.—On the Application of Adsorption to the Detection and 
Separation of certain Dyes: A. C. Chapman and A. Siebold.—The Esti- 
mation of Dirt in Milk: W. F. Lowe.—A New Method for the Detection 
and Estimation of Small Quantities of Nitrous Acid: E. H. Miller.—A 
Further Note on the Use of Methylene Blue as an Indicator in Iodi- 
metric Titrations : F. S. Sinnatt.—The Estimation of Nitric and Nitrous 
Acids in Acetic Acid Solution. The Stability of Nitric Acid in Acetic 
Acid Solution: Dr. K. J. P. Orton. 
GroLocicaL Society, at 8.—The Further Evidence of Borings as to the 
Range of the South-Eastern Coalfield and of the Palzozoic Floor, and as 
to the Thickness of the Overlying Strata: Prof. W. Boyd Dawkins.— 
Shelly Clay dredged from the Dogger Bank: J. W. Stather. 
ENTOMOLOGICAL SociETY, at 8.—Studies in the Blattida, XII.: R. 
Shelford.—Lycaena (Agriades) alexius, Frr., a ““Good" Species; Dr, 
T. A. Chapman. 
THURSDAY, June 6. 
Royat Society, at 4.30-—Croonian Lecture: The Process of Excitation 
in Nerve and Muscle: Keith Lucas. 
InsTITUTION OF MINING ENGINEERS, at 11 a.m.—Address by President : 
W. E. Garforth.—Why Leave Shaft-pillars? W. H. and b. H. Pickering. 
—Safety-devices in Connection with Electrical Machinery and Appliances 
for Coal-mines: D. Bowen and W. E, French.—A Rope-driven Coal- 
cutter: W. L. Spence. 
Roya InstiruTion, at 3.—On X-Rays and Matter: Prof. C. G. Barkla. 
FRIDAY, JuNE 7. 
Roya. InsTiTUTION, at g.—Lord Lister: Sir William Macewen. 
SATURDAY, June 8. 
Royat INnsTiTuTION, at 3.—The Weather and the Utilities of Forecasts: 
Willis L. Moore. 
CONTENTS. PAGE 
The Practical and Scientific Naa clpiae of Steel. 
Byserot.). OF Arnold hc. Saneieeeree ; SESS 
Experimental Psychology 2 dois eee ea 4a: PR tee . . 316 
A Journey to Canadian Barrens ..... .°: .::° 317 
Elementary Practical Physics, ByG.O...-° . 317 
Woranthmic Tables: ~ ieseauiesaeeiies tiene 
Our Bookshelf PMS 6 oahu ose 2h 
Letters to the Editor :— 
The Ammonia Flame.—Hon. R, J. Strutt, F.R.S. 320 
The Free-living Marine Nematodes.—Gilbert E. 
Johnson MEME Gc Co GIGkSROh Se bp SO 
Lobsters in the /®gean.—Prof. D’Arcy W. 
Thompson, C.B. . Sat 60 eee 
Birds’ Nests.—H. M. Woodcock mks ic! Ne hbarehel SORReE Oe 
June Meteor-showers.—John R. Henry .. 321 
Solar Halos on May 17.—W. P. Haskett- Smith 322 
A Mineral from Copper Ore.—P. Walther. 322 
Clouds and Shadows.—Cyril Crossland . . . 322 
The Asiatic Society of Bengal . . 322 
The Mineral Prospects in the Anglo- -Eeyptian 
Noudanwe by J. VW. G: oe 5 A Sek 
Jefferson Physical Laboratory. ‘By! E.R. - 324 
INotesiarn.0. c 5 Ric 272%! 
Our Astronomical Column :— 
Astronomical Occurrences forJune ....... 329 
The Reported Discovery of aComet ...... 329 
The Spectrum of Nova Geminorum No. 2... . . 329 
The May Aquarids and Halley's Comet ... . . 329 
The Measurement of Celestial Distances . . 329 
The Royal International Horticultural Exbibition 330 
An Early Cretaceous Flora, By Prof. A. C. Seward, 
JIWIRE Bl Bs IE! 
The Luminous Organs ‘of Certain Insects . 331 
National Teaching of Science Subjects 331 
American Bulletins on Agricultural Subjects 332 
Noteworthy Weather Records : 332 
The Gaumont Speaking Kinematograph Films, 
By Prof. William Stirling : a Bae aie: 
The American Philosophical Society Me dc 334 
University and Educational Intelligence .... 335 
NocietiesiandyAcademies, fuerte) < Us) re 337 
Booksiheceived..:. ..'.-". 2 pene mene @ be 339 
DianyotmSOcieties!-: 0c. |... «eee 34° 
