Jx REPORT — 1880. 



Recommendations adopted by the General Committee at the 

 Swansea Meeting in August and September, 1880. 



[When Committees are appointed, the Member first named is regarded as the 

 Secretary, except there is a specific nomination.] 



Involving Grants of Money. 



That the Committee, consisting of Mr. G. H. Darwin, Professor Sir 

 William Thomson, Professor Tait, Professor Grant, Dr. Siemens, Pro- 

 fessor Purser, Professor G. Forbes, and Mr. Horace Darwin, be re- 

 appointed for the Measurement of the Lunar Disturbance of Gravity; 

 that Mr, G. H. Darwin be the Secretary, and that the sum of 30Z. be 

 placed at their disposal for the purpose. 



That the Committee, consisting of Pi-ofessor Everett, Professor Sir 

 William Thomson, Mr. G. J. Symons, Professor Ramsay, Professor 

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

 Clement Le Neve Foster, Professor A. S. Herschel, Mr. G. A. Lebour, 

 Mr. A. B. Wynne, Mr. Galloway, Mr. Joseph Dickinson, and Mr. G. F. 

 Deacon, on Underground Temperature be reappointed, with the addition 

 of the name of Mr. A. Strahan ; that Professor Everett be the Secretary, 

 and that the sum of 20Z. be placed at their disposal. 



That Professor G. Carey Foster, Mr. C. Hockin, Professor Sir Wil- 

 liam Thomson, Professor Ayrton, Mr. J. Perry, Professor W. G. Adams, 

 Lord Rayleigh, Professor F. Jenkin, Dr. O. J. Lodge, Dr. John Hopkin- 

 son, Dr. Muirhead, and Mr. W. H. Preece be a Committee for the 

 purpose of constructing and issuing practical Standards for use in Elec- 

 trical Measurements ; that Dr. Muirhead be the Secretary, and that the 

 sum of lOOZ. be placed at their disposal for the purpose. 



That the Committee, consisting of Mr. James Glaisher, Dr. Flight, 

 Professor R. S. Ball, Mr. E. J. Lowe, and Professor A. S. Herschel, on 

 Luminous Meteors be reappointed ; that Professor A. S. Herschel be the 

 Secretary, and that the sum of 15L be placed at their disposal. 



That the Committee, consisting of Dr. Joule, Professor Sir William 

 Thomson, Professor Tait, and Professor Balfour Stewart, for effecting 

 the Determination of the Mechanical Equivalent of Heat be reappointed ; 

 that Dr. Joule be the Secretary, and that the sum of 40L be placed at 

 their disposal for the purpose. 



That a Committee, consisting of Dr. 0. J. Lodge, Professor Ayrton, 

 and Mr. Perry, be reappointed for the purpose of devising and construct- 

 ing an improved form of High Insulation Key for Electrometer Work ; that 

 Dr. O. J. Lodge be the Secretary, and that the sum of 51. be placed at 

 their disposal for the purpose. 



That the Committee, consisting of Professor Sylvester, Professor 

 Cayley, and Professor Salmon, for the Calculation of Tables of the 



