CORRESPONDING SOCIETIES OF THE BRITISH ASSOCIATION. 169 Eggs. Chairman.—Sir John Lubbock. Secretary.—Mr. H. E. Dresser, Mr. John Cordeaux, Mr. W. H. Hudson, Professor A. Newton, Mr. Howard Saunders, Mr. Thomas Henry Thomas, Canon Tristram, and Dr. C. T. Vachell. Recording 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. Chairman.—Professor E. Hull. Secretary.—Mr. P. F. Kendall. Professors W. Boyd Dawkins, T. McK. Hughes, T. G. Bonney, and J. Prestwich, and Messrs. C. E. De Rance, R. H. Tiddeman, J. W. Woodsii, and Prof. L. C. Miall. The Rate of Erosion of the Sea-coasts of England and Wales, and the Influence of the Artificial Abstraction of Shingle or other material in that action. Chairman.—Mr. W. Whitaker. Secretaries.—Messrs. C. E. De Rance and W. Topley. Messrs. J. B. Redman and J. W. Woodall, Maj. Gen. Sir A. Clarke, Admiral Sir E. Ommanney, Capt. Sir G. Nares, Capt. J. Parsons, Capt. W. J. L. Wharton, Professor J. Prestwich, and Messrs. E. Easton and J. S. Valentine, and Professor L. F. Vernon Harcourt. The Circulation of the Underground 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 a Digest of the eighteen Reports should be prepared by the Committee, and sold in a separate form. Chairman.—Professor E. Hull Secretary.—Mr. C. E. De Rance. Dr. H. W. Crosskey, Sir D. Galton, Professor J. Prestwich, and Messrs. J. Glaisher, P. Kendall, E. B. Marten, G. H. Morton, W. Pengelly, J. Plant, I. Roberts, T. S. Stooke, G. J. Symons, W. Topley, Tylden-Wright, E. Wethered, and W. Whitaker. The Rate of Increase of Underground Temperature downwards in various Localities on dry Land and under Water. Chairman.—Professor Everett. Secretary.—Professor Everett. Professor Lord Kelvin, Mr. G. J. Symons, Sir A. Geikie, Mr. J. Glaisher, Mr. Pengelly, Professor Edward Hull, Professor Prestwich, Dr. C. Le Neve Foster, Professor A. S. Herschell, Professor G. A. Lebour, Mr. A. B. Wynne, Mr. Galloway, Mr. Joseph Dickinson, Mr. G. F. Deacon, Mr. E. Wethered, Mr. A. Strahan, and Professor Michie Smith. Considering the advisability and possibility of establishing in other parts of the country Observations upon the Prevalence of Earth Tremors similar to those now being made in Durham in connection with coal mine explosions. Chairman.—Mr. G. J. Symons. Secretary.—Mr. C. Davison. Sir F. J. Bramwell, Mr. E. A. Cowper, Professor G. H. Darwin, Professor J. A. Ewing, Mr. Isaac Roberts, Mr. Thomas Gray. Sir John Evans, Professor J. Prestwich, Professor E. Hull, Professor G. A. Lebour, Professor R. Meldola, Professor J. W. Judd, Mr. M. Walton Brown, Mr. J. Glaisher, Professor C. G. Knott, Professor J. H. Poynting, and Mr. Horace Darwin. The Collection, Preservation, and Systematic Registration of Photographs of Geological Interest. Chairman.—Professor J. Geikie. Secretary.—Mr. O. W. Jeffs. Professors Bonney and Boyd Dawkins, Drs. V. Ball and T. Anderson, and Messrs. A. S. Reid, E. J. Garwood, W. Gray, H. B. Wood- ward, J. E. Bedford, R. Kidston, W. W. Watts, J. W. Davis, R. H. Tiddeman, J. J. H. Teall, and H. B. Woodward. The Application of Photography to the Elucidation of Meteoro-