xil REPORT—1904.. 
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Report of the Committee on Electrical Standards (p. 30).......-.:.ssseeeeee 
*Exhibition of a Magnetic Alloy containing no Iron, By R. A, Hap- 
FIELD ...... Senee sens ceans coMeGAsaeh wth'e ce bestiees smuekina de’ vows opie do Gkle eer ieee aan 468 
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Sus-sEction oF AstRoNOMY AND CosmicaL PuHysics. 
. Report of the Seismological Committee (p. 41) ........4+ Ronen tc Mero: Sent 468 
Report on the Investigation of the Upper Atmosphere by means of Kites 
(Detlib)ercosccsshectececcenectetesstscarcecssesccsetecaeeserecsecasstenaieshennane aaa 
3. The Temperature of the Air in Cyclones and Anticyclones, as shown by 
Kite-flights at Blue Hill Observatory, U.S.A. By A. LAWRENCE 
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HUOMUH, WSO es GAG, sdascecasacseet Secs sccecssasedstencieceoreeedec sent eent =nnenmmam 468 
4, “Problems of Astronomy. By Sir Davip Gut, K.C.B., F.R.S. ..........+. 469 
5. Discussion on Units used in Meteorological Measurement. Opened by 
TD EAAW «Ns SSELAW. EES yee nece cde. stanwedeencsscelinet cm sceben ctwseueen aes ene= Stemi 
6. *On the Masses of the Stars. By Dr. H. N. RUSSELL ...........s:seccenecens 469 
TUESDAY, AUGUST 23. 
. A Correlation between the Electric Conductivity of Air and the Variation 
of Barometric Pressure. By JoHn Don, M.A., B.Sc. ........2ccc0eceeeeneees 469 
On the Ionisation of the Atmosphere. By Professor A. ScuusTsr, F.R.S. 471 
. *Discussion on the Radio-activity of Ordinary Matter. Opened by Pro- 
fessor Ok DB OMBON, PIR. B is .:<secnsaaes»sediniee’ axe ou abaebeasent a eeeeaem 47] 
4. On the Radio-activity of the Hot Springs of Aix-les-Bains. By Dr. G. A. 
TSUANG): cnncaese ee» auras sebaines gaps wavedsaysi+ tse> on-cespi shou nkapnnee een 471 
5. tPlan of a Combination of Atoms having the Properties of Polonium or 
Radinm.+ By Lord Kenyin, FURS. ............c00.+++s0deasss00 oe 472 
tElectrical Insulation in Vacuum. By Lord Kevin, F.R.S.......0.000008 472 
*Electrical Conductivity of Flames. By Dr. H. A. WILSON ......0000000+: 472 
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9. The Production of Radio-active Surfaces. By ©. E. 8. PHILLIPS ......... 473 
10. *The Kinetic Theory : Determination of the Size of Molecules. By J. H. 
SEMAING ish catnesncnsissances env Oinsvecet vsgnstts¥esieseass ads ak sestiens soem aaa 473 
11. Dr. Grindley’s Experiments on Steam in the Light of the Ether-pressure 
Theory. By J..MAGPARLAWE GRAY |...2....1040.00s+.0020<s.00800 eee 474 
12, On a Volatile Product of the Radium Emanation. By W. O. D. 
AU HRA, Sa hg ee hic cnt std adsclinddy ase dasa ashiedeatet eee 474 
WEDNESDAY, AUGUST 24. 
DEPARTMENT oF PuHysics. 
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The Propagation of Electric Waves along Spiral Wires, and on an Appli- 
ance for Measuring the Length of Waves used in Wireless Telegraphy. 
By J. A. Fremrne, M.A., DSc) HARIS: \issaneaskhet.fsetebecdee eee 474 
Eddy-current Losses in Three-phase Cable-sheaths. By M. B. Fretps.... 476 
*Magnetic and Electric Properties of Nickel at High Temperatures. By 
Rr ides FONOUT cd dacs pices. schbes-oddoa caschodesatt ee ane 476 
