TRANSACTIONS OF THE SECTIONS. 



•Section A.— MATHEMATICAL AND PHYSICAL SCIENCE. 



THURSBAT, SEPTEMBER 1. 



Page 



Address by Professor Sir William Thomson, M. A., LL.D., D.C.L., F.R.S.L. 



and E., President of the Section ol8 



1. On the Possibility of the Existence of Intra-Mercurial Planets. By 



Balfour Stewart, LL.D., F.RS 51^ 



;2. On the Photographic Spectrnm of Comet 'b' 1881. By William 



HuGGiNS, D.C.L., LL.D., F.R.S 520 



3. On a Prismatic Optometer. By Tempest Anderson, M.D., B.Sc 521 



•i. On the Eftects of the Lunar and Solar Tide in increasing the Length of 



the Sidereal Day. By the Rev, Samuel Haughton, M.D., F.R.S o2.j 



6 On the Effects of Oceanic CuiTents upon Climates. By the Rev. Samuel 



Haughton, M.D., F.RS 523 



. 6. On some applications of Electric Energy to Horticultui-al and Agricul- 

 tural purposes. By Dr. C. Wm. Siemens, F.RS 524 



7. On Hydrocarbons in the Solar Atmosphere. By Captain Abnet, R.E., 



F.R.S. 524 



FRIDAY, SEPTEMBER 2 



Physical Department. 



I . On Surface-tension and Capillaiy Action. By Professor Osborne Rey- 

 nolds, F.RS 524 



.2. On some Colour Experiments. By Lord Rayleigh, F.R.S 526 



-3. On a Question in the Theory of Lighting. By Lord Rayleigh, F.R.S. 526 



4. On some uses of Faure's Acciunulator in connection with Lighting by 



Electricity. By Professor Sir William Thomson, M. A., F.R.S 526 



5. On the Economy of Metal in Conductors of Electricity. By Professor Sir 



William Thomson, M.A., F.R.S 526 



6. On the proper Proportions of Resistance in the Working Coils, the Electro- 



Magnets, and the External Circuits of Dynamos. By Professor Sir 

 William Thomson, M.A., F.R.S ^ 528 



7. On the Application of Electricity to the Localisation of a Bidlet in a 

 Wound. By W. H. Preece, F.RS 531 



8. On some of Bell and Taint«r's recent Researches and their Consequences. 



By W. Lant Carpenter, B.A., F.C.S 5.31 



