iv CONTENTS. 



Page 



Report of the Committee, consistiug of Professor Fitzgerald (Chairman), 

 Professor Baerett (Secretary), and Mr. Trotjton, appointed to investigate 

 the Molecular Phenomena connected with the Magnetisation of Iron 33 



Report of the Committee, consisting of Mr. John Murray (Secretary), 

 Professor Schuster, Sir William Thomson, the Abbe Renard, Mr. A. 

 BucHAN, the Hon. R. Abercrombt, and Dr. M. Geabham, appointed for 

 the Collection and Identification of Meteoric Dust 34 



Eighteenth Report of the Committee, consisting of Professor Everett, Pro- 

 fessor Sir William Thomson, Mr. G. J. Symons, Sir A. C. Ramsay, Dr. 

 A. Geikie, Mr. J. Glaisher, Mr. Pengelly. Professor Edward Hull, 

 Professor Prestwich, Dr. C. Le Neve Foster, Professor A. S. Heeschel, 

 Professor G. A. Lebour, Mr. A. B. Wynne, Mr. Galloway, Mr. Joseph 

 Dickinson, Mr. G. F. Deacon, Mr. E. Wethered, and Mr. A. Strahan, 

 appointed for the purpose of investigating the Rate of Increase of Under- 

 ground Temperature downwards in various Localities of Dry Land and 

 under Water. (Drawn up by Professor Everett, Secretary) 35 



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

 Mr. G. J. Symons (Secretary), Professor Schuster, Dr. G. Johnstone 

 Stoney, Sir H. E. Roscoe, Captain Abney, and Mr. Whipple, appointed 

 for the purpose of considering the best methods of recording the direct 

 Intensity of Solar Radiation 40 



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

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

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

 A. MuiRHEAD, Mr. W. H. Peeece, Mr. Herbert Taylor, Professor Everett, 

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

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

 80N, 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 41 



Second Report of the Committee, consisting of the Hon. Ralph Abercromby, 

 Dr. A. BucHAN, Mr. J. Y. Buchanan, Mr. J. Willis Bund, Professor 

 Chrystal, Mr. D. Cunningham, Professor Fitzgerald, Dr. H. R. Mill 

 (Secretary), Dr. John Murray (Chairman), Mr. Isaac Roberts, Dr. H. 0. 

 SoRBY, and the Rev. C. J. Steward, appointed to arrange an investigation 

 of the Seasonal Variations of Temperature in Lakes, Rivers, and Estuaries 

 in various parts of the United Kingdom in co-operation with the local 

 societies represented on the Association 44 



Report of the Committee, consisting of Mr. Glaisher, Mr. W. H. M. 

 Christie, Sir R. S. Ball, and Dr. Longstaff, appointed to consider the 

 proposals of M. Tondini db Quaeenghi relative to the Unification of 

 Time, and the adoption of a Universal Prime Meridian, which have been 

 brought before the Committee by a letter from the Academy of Sciences of 

 Bologna 49 



Fifth Report of the Committee, consisting of Professor W. Grylls Adams 

 (Secretary), Mr. W. Lant Carpenter, Mr. C. H. CARPMAEL,Mr. W. H. M. 

 Christie, Professor G. Chrystal, Captain Creak, Professor G. H. Daewin, 

 Mr. William Ellis, Sir J. H. Lefroy, Professor S. J. Perry, Professor 

 Schuster, Professor Sir W. Thomson, and Mr. G. M. Whipple, appointed 

 for the purpose of considering the best means of Comparing and Reducing 

 Magnetic Observations 49 



Report of the Committee, consisting of Professor Roberts-Austen (Chair- 

 man), Mr. T. Turner (Secretary), and Professor J. W. Langley, ap- 

 pointed to consider the best method of establishing International Standards 



