REPORT—1899. 
TRANSACTIONS OF THE SECTIONS. 
Section A—-MATHEMATICAL AND PHYSICAL SCIENCE. 
THURSDAY, SEPTEMBER 14. 
Page 
Address by Professor J. H. Porntrne, D.Sc., F.R.S., President of the Section 615 
ike 
2. 
On the Spectroscopical Examination of Contrast Phenomena. By Groree 
RERESUROH MUNG ceig cece cacuss jaroscsestesbbenchadhenseaeevcsey testes ¥amuntes ss et Vet ames 624 
Preliminary Note on the Variation of the Specific Heat of Water. By 
Professor H. L. Cattenpar, M.A., F.R.S., and H. T. Barnus, M.A.Se.... 624 
8. On the Expansion of Porcelain with Rise of Temperature. By T. G. 
VED ORD) je serciesieveceives'easaevieesieidde' sae Onarsncmeete Naawen sed sujreaein puateeaet Seaman 632 
4, Interim Report on Methods of Determining Magnetic Force at Sea......... 632 
FRIDAY, SEPTEMBER 15, 
1. Report on Electrolysis and Hlectro-Chemistry .......sscssssseesersssseneesneos 632 
. On the Energy per Cubic Centimetre in a Turbulent Liquid when Trans- 
mitting Laminar Waves. By Professor G. F. Firzcrraxp, F.RS. ...... 632 
. On the Permanence of certain Gases in the Atmospheres of Planets. By 
GEL, (BRYAN, Ss Dick SEU tee. cae ceca seeacuue oes vexnsSponchaeses .thagesea an 634 
. On some Novel Thermo-Electric Phenomena. By W. I’. Barrert, F.R.S, 635 
. Report on the Heat of Combination of Metals in the Formation of Alloys 636 
. Report on Radiation from a Source of Light in a Magnetic Field ......... 636 
. On the Production, in Rarefied Gases, of Luminous Rings in Rotation 
about Lines of Magnetic Force. By C. I. 8. PHIDLIPS .......cccceeeceeeee 686 
. Note on Deep-Sea Waves. By Vatauan Cornisu, M.Sc, F.CS., 
TEENA CSS 6 sc dot qnggCCHNct lone nuGcuce NEC AC SDEDDGDoan. TFERCOCKRCCAae ncorur nc. ve 637 
SATURDAY, SEPTEMBER 16. 
. tOn the Existence of Masses Smaller than the Atoms. By Professor 
Je le eLLOMSON MEG hU. Satis savescay ses cteanscseneseisetosersscosns coaveseases senna 637 
. tOn the Controversy concerning the Seat of Volta’s Contact Force. B 
Professor OLIVER GODGE EVENS, 6. cscscscessont'tedecsgaseseraqeseeesese casa gaan ». 638 
MONDAY, SEPTEMBER 18. 
DEPARTMENT J,.— MATHEMATICS. 
1. Report on Tables of certain Integrals ..........ssccesseeceeenes beeseseneces sespaee 638 
2, Report on Tables of certain Mathematical Functions...........cserseeeeeeerees 6388 
8, The Median Estimate. By Francis Garton, D.C.L,, PUR S.eccceecseceees 638 
