CONTENTS. V 



Page 

 G. F. FitzGerald, G. Oheystal, and J. J. Thomson, Messrs. R. T. Glaze- 

 brook (Secretary) and W. N. Shaw, Rev. T. 0. Fitzpateick, Dr. J. T. Bot- 

 TOMLET, Professor J. Vieiamtj Jones, Dr. G. Johnstone Stonet, Professor 

 S. P. Thompson, and Mr. G. Forbes 117 



Appendix I. — Report of the American Delegates at the Chicago Con- 

 ference to the Secretary of State at Washington 119 



Appendix II. — Experiments on the Value of the Ohm. By J. 

 ViRiAMF Jones 123 



Appendix III. — Comparison of the Standards employed by Professor 

 Jones with the Standards of the Association. By R. T. Glazebrook 123 



Appendix IV. — Comparison of some of the Standards of the Board of 

 Trade with those of the Association. By J. Rennie 130 



Appendix V. — Values of Certain Coils belonging to the Indian Govern- 

 ment. ByE. O.Walker 131 



Appendix VI. — On the Specific Resistance of Copper and of Silver. 

 By Rev. T. C. Fitzpatrick 131 



Appendix VII. — Final Report of the Electrical Standards Committee 

 of the Board of Trade, and Order in Council regarding Standards for 

 Electrical Measurements 136 



The Application of Photography to the Elucidation of Meteorological Pheno- 

 mena. — Fourth Report of the Committee, consisting of Mr. G. J. Stmons 

 (Chairman), Professor R. Meldola, Mr. J. Hopkinson, a<nd Mr.. A. W. 

 Clayden (Secretary). (Drawn up by the Secretary) 143 



Earth Tremors. — Report of the Committee, consisting of Mr. G. J. Symons, 

 Mr. C. Davison (Secretary), Sir F. J. Bramwell, Professor G. H. Darwin, 

 Professor J. A. Ewing, Dr. Isaac Roberts, Mr. Thomas Gray, Sir John 

 Evans, Professors J. Prestwich, E. Hull, G. A. Lebour, R. Meldola, 

 and J. W. Jtjdd, Mr. M. Walton Brown, Mr. J. Glaisher, Professor C. 

 G. Knott, Professor J. H. Poynting, Mr. Horace Darwin, and Dr. R. 

 Oopeland (Drawn up by the Secretary) 145 



Appendix I. — Account of Observations made with the Horizontal 

 Pendulum at Nicolaiew. By Professor S. Kortazzi 155 



Appendix II. — The Bifilar Pendulum at the Royal Observatory, Edin- 

 burgh. By Professor R. CoPELAND 158 



The Electrolytic Methods of Quantitative Analysis. — Report of the Committee, 

 consisting of Professor J. Emerson Reynolds (Chairman), Dr. C. A. Kohn 

 (Secretary), Professor P. Feankland, Professor F. Clowes, Dr. Hugh 

 Marshall, Mr. A. E. Fletcher, Mr. D. H. Nagel, Mr. T. Tijrnek, and 

 Mr. J. B. Coleman 160 



Bibliography of Spectroscopy. — Report of the Committee, consisting of Pro- 

 fessor H. McLeod (Chairman), Professor W. C. Roberts-Austen, Mr. H. G. 

 Madan, and Mr. D. H. Nagel 161 



An International Standard for the Analysis of Iron and Steel. — Sixth Report 

 of the Committee, consisting of Professor W. C. Robeets-Austen (Chairman), 

 Sir F. Abel, Mr. E. Riley, Mr. J. Spiller, Professor J. W. Langley, Mr. 

 G. J. Snelus, Professor Tilden, and Mr. Thomas Tuenbr (Secretary). 

 (Drawn up by the Secretary) 237 



The Action of Light upon Dyed Colours. — Report of the Committee, consisting 

 of Professor T. E. Thorpe (Chairman), Professor J. J. Hummel (Secretary), 

 Dr. W. H. Perkin, Professor W. J. Russell, Captain W. de W. Abnet, 

 Professor W. Stroud, and Professor R. Meldola. (Drawn up by the 

 Secretary) 238 



