OFFICERS OF SECTIONAL COMMITTEES. Xlll 



SECTION F. STATISTICS. 



President. — Henry Hallam, Esq., F.R.S. 



Vice-Presidents. — Sir Charles Lemon, Bart., F.R.S. G. R. 

 Porter, Esq., F.R.S. 



Secretaries. — Francis Clarke, Esq. Rawson W. Rawson, 

 Esq. W. C. Tayler, Esq., D.C.L. 



SECTION G. MECHANICAL SCIENCE. 



Preside7it. — Professor Willis, F.R.S. Robert Stephenson, 

 Esq. 



Fice- Presidents. — G. Rennie, Esq., F.R.S. Dr. Lardner, 

 F.R.S. 



Secretaries. — T. Webster, Esq., Sec. Civ. Eng. W. Carp- 

 inael, Esq. Wm. Hawkes, Esq. 



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. Baron Alexander von Humboldt, Berlin. Professor 

 Liebig, Giessen. Professor OErsted, Copenhagen. Jean Plana, 

 Astronomer Royal, Turin. M. Quetelet, Brussels. Professor 

 Schumacher, Altona. 



