259 



Vincent's rocks, Clifton, immediately below the Cliff, against which 

 the suspension bridge over the Avon is designed to abut. The tem- 

 peratures of the springs were 72° and 66° respectively ; and the gas 

 consisted of 92 parts of nitrogen, eight of oxygen, and three of car- 

 bonic acid. The author deduces from these facts arguments in con- 

 firmation of the views he has stated in the paper to which this is an 

 appendix. 



Mr. Faraday's Sixth Series of Experimental Researches in Elec- 

 tricity were resumed and concluded ; and the reading of the Seventh 

 Series commenced. 



The Society then adjourned over the following Thursday, being the 

 Day of the Martyrdom of King Charles the First, to meet again on the 

 6th of February. 



February 6, 1834. 



JOHN WILLIAM LUBBOCK, Esq., M.A., V.P. and Treasurer, 

 in the Chair. 



Captain Chesney, Roy. Art. ; Thomas Copeland, Esq. ; the Right 

 Hon. Sir Edward Cust, K.C.B. ; James Home, Esq. ; John Russell 

 Reeves, Esq. ; Lieut.-Col. William Henry Sykes, E.I.C.S. ; and 

 John Waterhouse, Esq., were elected Fellows of the Society. 



The reading of Mr. Faraday's Seventh Series of Experimental Re- 

 searches in Electricity was resumed in continuation. 



February 13, 1833. 



HIS ROYAL HIGHNESS THE DUKE OF SUSSEX, K.G., 

 President, in the Chair. 



The reading of Mr. Faraday's papers was resumed and concluded. 



" Experimental Researches in Electricity. — Sixth and Seventh Se- 

 ries." By Michael Faraday, Esq., D.C.L., F.R.S., Fullerian Professor 

 of Chemistry in the Royal Institution of Great Britain. 



In the course of his experimental investigation of a general and 

 important law of electro-chemical action, which required the accurate 

 measurement of the gases evolved during the decomposition of water 

 and other substances, the author was led to the detection of a curious 

 effect, which had never been previously noticed, and of which the 

 knowledge, had he before possessed it, would have prevented many 

 of the errors and inconsistencies occurring in the conclusions he at 

 first deduced from his earlier experiments. The phenomenon ob- 

 served was the gradual recombination of elements which had been 

 previously separated from each other by voltaic action. This hap- 

 pened when, after water had been decomposed by voltaic electricity, 

 the mixed gases resulting from such decomposition were left in con- 



