IV CONTENTS. 



Page 

 Report of the Committee, consisting of Professor G. H. Darwin, Sir W. 

 Thomson, and Major Baied, for preparing instructions for the practical 

 ■work of Tidal Ohservation ; and Fourth Report of the Committee, con- 

 sisting of Professors G. H. IDarwin and J. C. Adams, for the Harmonic 

 Analysis of Tidal Observations. Drawn up by Professor G. II. Darwxn ... 40 



Report of the Committee, consisting of Professor Crtjm Brown (Secretary), 

 Mr. Milne Home, Mr. John Murray, and Mr. Buchan, appointed for the 

 purpose of co-operating with the Scottish Meteorological Society in making 

 Meteorological Observations on Ben Nevis 58 



Third Report of the Committee, consisting of Professor Balfour Stewart 

 (Secretary), Professor Stokes, Professor Schuster, Mr. G. Johnstone 

 Stonet, Professor Sir H. E. IloscoE, Captain Abney, and Mr. G. J. 

 Stmons, appointed for the purpose of considering the best methods of re- 

 cording the direct Intensity of Solar Radiation 



Second Report of the Committee, consisting of Professor Balfour Stewart 

 (Secretary), Professor W. G. Adams, Mr. W. Lant Carpenter, Mr. C. H. 

 Carpmael, Mr. W. H. M. Christie (.Astronomer Royal), Professor G. 

 Chrxstal, Staff Commander Creak, Professor G. H. Darwin, Mr. 

 William Ellis, Sir J. H. Lefrot, Professor S. J. Perry, Professor 

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

 purpose of considering the best means of Comparing and Reducing Magnetic 

 Observations. Drawn up by Professor Balfour Stewart 64 



First Report on our Experimental Knowledge of the Properties of Matter 

 with respect to Volume, Pressure, Temperature, and Specific Heat. Bj'- 

 P. T. Main, M.A 100 



Third Report of the Committee, consisting of Professor Balfour Stewart 

 (Secretary), Mr. J. Knox L.iUGHToN, Mr. G. J. Symons, Mr. R. 11. Scott, 

 and Mr. Johnstone Stoney, appoioted for the purpose of co-opei-ating with 

 Mr. E. J. Lowe in his project of establishing a Meteorological Observatory 

 near Chepstow on a permanent and scientific basis 139 



Report of the Committee, consisting of General J. T. AValker, Sir W. Thom-« 

 SON, Sir J. H. Lefroy, General R. Strachey, Professor A. S. Herschel, 

 Professor G, Chrystal, Professor C. Niven, Professor A. Schuster, and 

 Professor J. H. Poynting (Secretary), appointed for the purpose of inviting 

 desiijrns for a good Differential Gravity Meter in supersession of the pendu- 

 lum, whereby satisfactory results may be obtained at each station of obser- 

 vation in a few hours, instead of the many days over which it is necessarj' 

 to e.ttend the pendulum observations 141 



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

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

 Lord Rayletgh, Dr. 0. J. Lodse, Dr. John Hopkinson, Dr. A. Muirhead, 

 Mr. AV. H. Prbece, Mr. H. Taylor, Professor Everett, Professor Schus- 

 ter, Dr. J. A. Fleming, Professor G. F. Fitzgerald, Mr. R. T. Glaze- 

 brook (Secretary), Professor Chrystal, Mr. H. Tomlinson, Professor 

 W. Garnett, Professor J. J. Thomson, and Mr. W. N. Shaw, appointed 

 for the purpose of constructing and issuing practical Standards for use in 

 Electrical Measurements 145 



Second Report of the Committee, consisting of Professors A. Johnson (Secre- 

 tary), J. G. MacGregor, J. B. Cherriman, and H. T. Bovey and Mr. C. 

 Carpmael, appomted for the purpose of promoting Tidal Observations in 

 Canada 150 



Report of the Committee, consisting of Mr. James N. Shoolbred (Secre- 

 tary) and Sir William Thomson, appointed for the reduction and 

 tabulation of Tidal Observations in the English Channel, made with the 



