y; REPORT — 1903. 



TRANSACTIONS OF THE SECTIONS. 



Section A.—MATHEMATICAL AND PHYSICAL SCIENCE. 



THURSDAY, SEPTEMBER 10. 



Page 



Address ty Charles Vernon Bots, F.R.S., Tresidcnt of the Section 525 



1. On the Electro-ethereal Theory of the Velocity of Light in Gases, Liquids, 



and Solids. By Lord Kelvin, O.M., G.C.V.0 535 



2. *Discussion on the Nature of the Emanations from Radium. Opened by 



Professor E. IIuthekfoed 535 



Contribution by Lord Kelvin, O.M., G.C.V.0 535 



3. tJber die in der Atmosphilre und im Erdboden enthaltene radioaktive 

 Emanation. Von T. Elsteb u. 11. Gextel 537 



4. Cosmical Radio-activity. By Professor Arthur Scuustek, F.R.S 538 



5. Intensification of Chemical Action by the Emanations from Gold and 

 Platinum. By G. T. Bbildt 539 



t^ • FRIDAY, SEPTEMBER 11. 



Sub-section — Astronomy and Meteoeologt. 



Address by W. N. Shaav, Sc.D., F.R.S., Chairman (Methods of Meteorological 



Investigation) 541 



1. tOn Simultaneous Solar and Terrestrial Phenomena. By Sir Norman 

 LocKYER, K.C.B., F.R.S 549 



2. *0n the Relation of the Rainfall of Scotland to the Sun-spot Periods, 



1855-98. By A. Buchan, M.A., LL.D., F.R.S., F.R.S.E 549 



3. Etudes sur les Dt5pressions Barometriques a Diverses Hauteurs. Par 



L. Teisserenc de Boet 549 



4. The Origin and Forms of Hoar Frost. Bv Kael Grossmann, M.D., 

 F.R.C.S., F.G.S., and Joseph Lomas, A.R.C.S., F.G.S 555 



Department of Physics. 



1. tDiscussion on the Treatment of Irreversible Processes in Thermo- 



dynamics. Opened by J. Swinburne, M.Inst.C.E 55G 



2. Note on the Rate of Combustion and Explosive Pressure of Cordite. By 



J. E. Petavel 556 



3. Granular and SpicuJar Structure in Solids. By G. T. Beilbt 557 



