TEANSACTIONS OF THE SECTIONS. 



Section A.— MATHEMATICAL AND PHYSICAL SCIENCE. 



THURSDAY, AUGUST 24. 



Page 

 Address by the Eight Hon. Professor Lord Eatleigh, M. A., F.E.S., F.E.A.S., 



F.E.G.S., President of the Section 437 



1. Second Eeport of the Committee for the Measurement of the Lmiar Dis- 

 turbance of Gra\-ity 441 



'2. Eeport of the Committee upon the present state of our Knowledge of 

 Spectrum Analysis 441 



3. On the Tension of Mercury Vapours at Common Temperatures. By 



Professor Lord Eatleigh, F.E.S ,. 441 



4. On the Velocity of White and Coloured Light. By Professor G. Fokbes, 



M.A., F.R.S.E 441 



5. Preliminary Account of Eesults obtained duiiug tlie late total Solar Eclipse 



(May 17, 1882). By Dr. Aethur Schuster, F.E.S. , and Captain Abney, 

 F.R.S :. 441 



G. On some Matters relating to the Sun. By Dr. Arthur Schuster, 

 F.E.S 442 



7. On the Method of Harmonic Analysis used in deducing the Numerical 



Values of the Tides of long period, and on a Misprint in the Tidal Eeport 

 for 1872. By G. H. Darwin, F.E.S , 442 



8. On the Photographic Spectrum of Comet ("S^'ells) 1, 1882. By William 



HuGGiNS, D.C.L., LL.D., F.E.S 442 



'J. On the Photographic Spectrum of the Great Nebida in Orion. By 

 William Huggins, D.O.L., LL.D., F.E.S. . .'. 443 



FRIDAY, AUGUST 25. 



1. On the Absolute Measurement of Electric Currents. By Professor Lord 

 Eatleigh, F.E.S 445 



2. On the Duration of Free Electric Currents in an Infinite Conductin? 

 Cylinder. By Professor Lord Eatleigh, F.E.S .". 44G 



ij. Un tlie Equilibrium of Liquid-conducting Surfaces charged with Electricity. 

 By Professor Lord Eatleigh, F.E.S. ! 



447 



