ON THE SILVER VOLTAMKTKK. 599 



We desire to thank the Committee of the British Association for grants of money 

 fin- the purchase of materials; Messrs. JOHNSON, MATTHEY and Co. for the loan of 

 several plat inum vessels; Mr. L. OEBTLI.NG and Dr. SCOTT for the loan of sensitive 

 1 i.i lances; and Professor G. VAN DIJK for the loan of apparatus used by him in his 

 researches. Our thanks are also due to Lord UAYLKIOH and Dr. GLAZEBROOK for 

 much advice during the progress of the investigation. 



