CONTENT?. V 



Page 



Second (Interim) Report of tbe Committee, consisting of Dr. John Kere, Sir 

 William Thomson, Professor Rucker, and Mr. H. T. Glazebeook (Secre- 

 tary), appointed to co-operate witli Dr. Keer in his researches on Electro- 

 optics 14/ 



Report of the Committee, consisting of Professor Liteing, Dr. C. PiAZZi 

 Smyth (Secretary), and Professors Dewae and Schxjstee, appointed to 

 co-operate with Dr. C. PiAZZi Smyth in his researches on the Ultra-violet 

 Rays of the Solar Spectrum 147 



Report of the Committee, consisting of Professor W. Grylls Adams (Chair- 

 man and Secretary), Sir William Thomson, Professor G. H. Darwin, 

 Professor G. Chrystal, Professor A. Schuster, Professor Rucker, Mr. C. H, 

 Carpmael, Commander Creak, the Astronomer Royal, Mr. William 

 Ellis, and Mr. G. M. Whipple, appointed for the purpose of considering 

 the best means of Comparing and Reducing Magnetic Observations 149 



Report of the Committee, consisting of Professor G. Carey Foster, Sir 

 William Thomson, Professor Ayrton, Professor J. Perry, Professor AV. 

 G. Adams, Lord Rayleigh, Dr. 0. J. Lodge, Dr. John Hopkinson, Dr. 

 A. Muirhead, Mr. W. H. Preece, Mr. Herbert Tayloe, Professor Everett, 

 Professor Schustee, Dr. J. A. Fleming, Professor G. F. Fitzgerald, 

 Mr. R. T. Glazebrook (Secretary), Professor Chrystal, Mr. H. Tomlin- 

 soN, Professor W. Garnett, Professor J. J. Thomson, Mr. W. N. Shaw, 

 Mr. J. T. Bottomley, and Mr. T. Gray, appointed for the purpose of 

 constructing and issuing Practical Standards for use in Electrical Measure- 

 ments lo-' 



Interim Report of the Committee, consisting of Professor Cayley, Professor 

 Sylvestee, Mr. A. R. Forsyth, and Professor A. Lodge (Secretary), ap- 

 pointed for the purpose of carrying on the Tables connected with the Pellian ' 

 Equation from the point where the work was left by Degen in 1817 160 



Seventh Report of the Committee, consisting of Sir G. G. Stokes (Chairman), 

 Professor Schuster, Mr. G. Johnstone Stoney, Sir H. E. Roscoe, Captain 

 Abney, Mr. Whipple, Professor McLeod, and Mr. G. J. Symons (Secre- 

 tary), appointed for the purpose of considering the best methods of recording 

 the direct Intensity of Solar Radiation 100 



Report of the Committee, consisting of Sir H. E. Roscoe, Mr. J. N. Lockyer, 

 Professors Dewar, Wolcott Gibbs, Liveing, Schustee, and W. N. 

 Hartley, Captain Abney, and Dr. Maeshall Watts (Secretary), 

 appointed to prepare a new series of Wave-length Tables of the Spectra of 

 the Elements and Compounds 161 



Interim Report of the Committee, consisting of Professor Thoepe, Professor 

 Hummel (Secretary), Dr. Peekin, Professor Russell, Captain Abney, and 

 Professor Steoud, on the Action of Light upon Dyed Colours. (Drawn up 

 by the Secretary) 26-j 



Report (provisional) of a Committee, consisting of Professors McLeod and 

 W. Ramsay and Mr. W. A. Shenstone (Secretary), appointed to investigate 

 the Influence of the Silent Discharge of Electricity on Oxygen and other 

 Gases -G4 



Third Report of the Committee, consisting of Professors H. McLeod (Chair- 

 man), Robeets-Austen (Secretary), and Reinold and Mr. H. G. Madan, 

 appointed for the Continuation of the Bibliography of Spectroscopy 264 



Fifth Report of the Committee, consisting of Professor Tilden and Professor 

 Armstrong (Secretary), appointed for the purpose of investigating Isomeric 

 Naphthalene Derivatives. (Drawn up by Professor Aemsteong) 265 



Fifth Report of the Committee, consisting of Professors Tilden, McLeod, 

 PxcKEEiNG, Ramsay, and Young and Drs. A. R. Leeds and Nicol 



