iv CONTENTS. 



Page 

 Second Report of the Committee, consisting of the Rev. Samuel Haughton, 

 M.D., F.R.S., and Benjamin Williamson, F.R.S., appointed for the Cal- 

 culation of Smi-heat Coefficients. Drawn up by Dr. Haughton 89 



Fourteenth Report of the Committee, consisting of Professor Etekett, Pro- 

 fessor Sir William Thomson, Mr. G. J. Stmons, Professor Ramsat, Pro- 

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

 Dr. Clement Le Neve Foster, Professor A. S. Herschel, Professor G. 

 A. Leboue, Mr. A. B. Wynne, Mr. Galloway, Mr. Joseph Dickinson, 

 Mr. G. F. Deacon, ISIi-. E. Wethered, and Mr. A. Strahan, appointed 

 for the purpose of investigating the Rate of Increase of Underground Tem- 

 perature downwards in various Localities of Dry Land and under Water. 

 Drawn up by Professor Everett (Secretary) 90 



Report of 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, appointed 

 for the Measurement of the Lunar Disturbance of Gravity 93 



Second Report of the Committee, consisting of Captain Abney, Professor 

 W. G. Adams, and Professor G. Carey Foster, appointed to carry out an 

 Investigation for the purpose of fixing a Standard of White Light 126 



Final Report of a Committee, consisting of Professor A. S. Herschel, Pro- 

 fessor W. E. Ayrton, Professor P. M. Duncan, Professor G. A. Lebour, 

 Mr. J. T. Dunn, and Professor J. Perry, on Experiments to determine the 

 Thermal Conductivities of certain Rocks, showing especially the Geological 

 Aspects of the Investigation 126 



Report of the Committee, consisting of Mr. James Heywood, F.R.S., Mr. 

 William Shaen, Mr. Stephen Bourne, Mr. Robert Wilkinson, the Rev. 

 W. Delany, Professor N. Story IVIaskelyne, M.P., F.R.S., Dr. Stlvanus P. 

 Thompson, ISIiss Lydia E. Becker, Sir John Lubbock, Bart., M.P., F.R.S., 

 Professor A. W. Williamson, F.R.S., Mrs. Augusta Webster, and Dr. J. 

 H. Gladstone, F.R.S. (Secretary), on the manner in which Rudimentary 

 Science should be taught, and how examinations should be held therein, in 

 Elementary Schools 148 



Thii-d Report of the Committee, consisting of Professor W. C. Williamson 

 and Mr. W. H. Baily, appointed for the purpose of investigating the 

 Tertiary Flora of the North of Ireland. Drawn up by William Hellier 

 Baily, F.L.S., F.G.S., M.R.I.A. (Secretary) 152 



Eeport of the Committee, consisting of Dr. J. H. Gladstone, Dr. W. R. E. 

 HoDGKiNsoN, Mr. W. Carleton Williams, and Dr. P. P. Bedson (Secre- 

 tary), appointed for the purpose of investigating the Method of Determining 

 the Specific Refraction of Solids from their Solutions 155 



Fourth Report of the Committee, consisting of Professor Sir William Thom- 

 son, Dr. J. Merrifield, Professor Osborne Reynolds, Captain Douglas 

 Galton, Mr. J. N. Shoolbred (Secretary), Mr. J. F. Deacon, and Mr. 

 Rogers Field, appointed for the purpose of obtaining information respect- 

 ing the Phenomena of the Stationary Tides in the English Channel and in 

 the North Sea ; and of representing to the Government of Portugal and the 

 Governor of Madeira that, in the opinion of the British Association, Tidal 

 Observations at Madeira or other islands in the North Atlantic Ocean would 

 be very valuable, with a view to the advancement of our knowledge of 

 the Tides in the Atlantic Ocean 160 



Second Report of the Committee, consisting of Professor P. M. Duncan, F.R.S., 

 and Mr. G. R. Vine, appointed for the purpose of reporting on Fossil 

 Polyzoa. Drawn up by Mr. Vine (Secretary) 161 



Report of the Committee, consisting ■ of Dr. M. Foster, the lale Professor 

 RoLLBSTON, Mr. Pye-Smith, Professor Htjxlet, Dr. Oakpenter, Dr. Gwy» 



