IV PREFACE. 



been paid for out of the grant at the disposal of the Committee ; 

 as have the Plates for the two Memoirs of Professor Weber. 



The translation of Rudberg's experiments has been presented 

 to the Committee by Professor W. H. Miller, of Cambridge ; 

 and the translation of the Memoirs of Bessel, Weber, and 

 Goldschmidt, by Major Sabine ; and by the Committee to the 

 Editor. 



The Editor has also to acknowledge the valuable assistance 

 which he has received from Professors Miller and Wheatstone 

 in the revision of the translation of Ohm's Memoirs, and of 

 Professor Graham and Richard Phillips, Esq., for similar 

 services with regard to the Chemical Memoirs. To the friendly 

 and zealous cooperation of Major Sabine he is also most espe- 

 cially indebted. 



Red Lion Court, Fleet Street, 

 Feb. 20, 1811. 



