OFFICERS OF SECTIONAL COMMITTEES. Xili 
SECTION F.—STATISTICS. 
President.—Lord Sandon, F.R.S., M.P. 
Vice- Presidents.—Mr. Sheriff Alison. Rev. Dr. Chalmers. 
Lieutenant-Colonel Sykes, F.R.S. 
Secretaries.—Professor Ramsay. R.W. Rawson, Esq. Charles 
R. Baird, Esq. 
SECTION G.—MECHANICAL SCIENCE. 
President.—Sir John Robison, Sec. R.S. Edin. 
Vice-Presidents.—His Grace the Duke of Argyll. The Rev. 
T. R. Robinson, D.D. John Taylor, Esq., Treas. B.A. James 
Walker, Esq., Pres. Inst. Civ. Eng. 
Secretaries.—J. Scott Russell, Esq. Charles Vignoles, Esq., 
C.E. James Thompson, Esq., C.E. James Tod, Esq., Sec. 
Soc. of Arts. 
CORRESPONDING MEMBERS. 
Professor Agassiz, Neufchatel. M. Arago, Secretary of the 
Institute, Paris. A. Bache, Principal of Girard College, Phi- 
ladelphia. Professor Berzelius, Stockholm. Professor De la 
Rive, Geneva. Professor Dumas, Paris. Professor Ehrenberg, 
Berlin. Professor Encke, Berlin. Baron Alexander von Hum- 
boldt, Berlin. M. Jacobi, St. Petersburgh. Professor Liebig, 
Giessen. Professor Link, Berlin. Professor Girsted, Copen- 
hagen. M. Otto, Breslau. Jean Plana, Astronomer Royal, 
Turin. M. Quetelet, Brussels. Professor Schumacher, Altona. 
