Ixxvi REPORT—1885. 
That Professors Dewar and A. W. Williamson, Dr. Marshall Watts, 
Captain Abney, Dr. Johnstone Stoney, Professors W. N. Hartley, McLeod, 
Carey Foster, A. K. Huntington, Emerson Reynolds, Reinold, and 
Liveing, Lord Rayleigh, Professor Schuster, and Professor W. Chandler 
Roberts be a Committee for the purpose of reporting upon the present 
state of our knowledge of Spectrum Analysis; and that Professor W. 
Chandler Roberts be the Secretary. 
That Professor E. Hull, Dr. H. W. Crosskey, Captain Douglas Galton, 
Professor J. Prestwich, and Messrs. James Glaisher, E. B. Marten, G. H. 
Morton, James Parker, W. Pengelly, James Plant, I. Roberts, Fox 
Strangways, T. S. Stooke, G. J. Symons, W. Topley, Tylden-Wright, E. 
Wethered, W. Whitaker, and C. E. De Rance be reappointed a Com- 
mittee for the purpose of investigating the Circulation of the Under- 
ground Waters in the Permeable Formations of England, and the Quality 
and Quantity of the Waters supplied to various towns and districts from 
these formations; and that Mr. De Rance be the Secretary. 
That Professors J. Prestwich, W. Boyd Dawkins, T. McK. Hughes, 
and T. G. Bonney, Dr. H. W. Crosskey, and Messrs. C. E. De Rance, 
H. G. Fordham, J. E. Lee, D. Mackintosh, W. Pengelly, J. Plant, and 
R. H. Tiddeman be reappointed a Committee for the purpose of record- 
ing the position, height above the sea, lithological characters, size, and 
origin of the Erratic Blocks of England, Wales, and Ireland, reporting 
other matters of interest connected with the same, and taking measures 
for their preservation ; and that Dr. Crosskey be the Secretary. 
That Sir A. Taylor, Professor Bayley Balfour, Dr. Crombie Brown, 
Dr. Cleghorn, and Sir John Lubbock be a Committee for the purpose of 
considering whether the condition of our Forests and Woodlands might 
not be improved by the establishment of a Forest School. 
That Sir Joseph D. Hooker, Sir George Nares, Mr. John Murray, 
General J. T. Walker, Admiral Sir Leopold McClintock, Dr. W. B. 
Carpenter, Mr. Clements Markham, and Admiral Sir Erasmus Ommanney, 
be a Committee for the purpose of drawing attention to the desirability 
of further research in the Antarctic Regions, nearly half a century having 
elapsed since the last exploration; and that Admiral Sir Erasmus 
Ommanney be the Secretary. 
That General J. T. Walker, Sir J. H. Lefroy, Sir William Thomson, 
Mr. Alexander Buchan, Mr. J. Y. Buchanan, Mr. John Murray, Mr. 
Francis Galton, Mr. H. W. Bates, and Mr. E. G. Ravenstein, with 
power to add to their number, be a Committee for the purpose of taking 
into consideration the combination of the Ordnance and Admiralty Sur- 
veys, and the production of a batho-hypsographical map of the British 
Islands ; and that Mr. H. G. Ravenstein be the Secretary. 
That General J. T. Walker, Sir William Thomson, Sir J. H. Lefroy, 
‘General R. Strachey, Professor A. 8. Herschel, Professor G. Chrystal, 
Professor C. Niven, Professor J. H. Poynting, and Professor A. Schuster 
be a Committee for the purpose of inviting designs for a good Differential 
Gravity Meter in supersession of the pendulum, whereby satisfactory 
results may be obtained, at each station of observation, in a few hours, 
instead of the many days over which it is necessary to extend pendulum 
observations ; and that Professor J. H. Poynting be the Secretary. 
That Dr. J. H. Gladstone, Professor Armstrong, Mr. William Shaen, 
Mr. Stephen Bourne, Miss Lydia Becker, Sir John Lubbock, Dr. 
H. W. Crosskey, Sir Richard Temple, Sir Henry E. Roscoe, Mr. James 
