422 



Mr. Grove on the Gas Voltaic Battery. 



or else, 



These sequences read both ways, i. e. either horizontally or 

 vertically. The vertical ones, however, are often indistinct, 

 and got at rather by inference and analogy than by the direct 

 testimony of the sounds themselves. Thus the connection be- 

 tween p and b is clearer than that between m and n, this latter 

 being clearer than the affinity between / and m. The sequence 

 of the vowel, expressed by the horizontal lines, is, however, very 

 distinct. 



Such is the amount of sequences which seem to the author 

 sufficiently distinct to claim recognition as the groundwork of 

 phonetic researches. The peculiar transition to the vowels on 

 the part of the sounds of series k and p, the affinity with the 

 consonants on the part of the vowels i and u, and certain pe- 

 culiarities of the mutes s and z, combined with the rudimentary 

 character of the present arrangement, indicate the probability 

 that further researches will give a more general expression to 

 the affinities in question. 



LXI. On the Gas Voltaic Battery. — Experiments made with 

 a view of ascertaining the rationale of its action and its ap- 

 plication to Audiometry. By W. R. Grove, Esq., M.A., 

 E.R.S., Professor of Experimental Philosophy in the London 

 Institution. 



(Continued from p. 354 and concluded.) 

 TT now occurred to me that as several of these gases (take 

 as an instance nitrogen) were absolutely without effect in 

 the gas battery, this would form a valuable instrument for the 

 analysis of atmospheric air or other mixed gases. I there- 

 fore procured, 



Experiment 24, — Two narrow cubic inch tubes of seven 

 inches long, carefully graduated into 100 parts. These were 

 * For the power of these signs see Phil. Mag. for February 1841. 



