JOURNAL 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND 



THE ARTS. 



h'OVEMBER, 1812. 



ARTICLE I. 



A Continuation of Experiments on the soniferous Vibrations of 

 the Gasses, ^c. ly Messrs. 'K.^v^'by awti Merrick. 



To William Nicholson, Esq. 

 SIR, 



THE following experiments, on the musical sounds of the 

 gasses, were performed with new apparatus, similar to that 

 which I described in a preceding communication to the Philo- 

 sophical Journal, vol. XXVII, p. 269. To those who may be 

 disposed to construct apparatus for the same purpose, a state- 

 ment of its dimensions will not be unacceptable. Such, how- 

 ever, as would possess it without the trouble of fitting it up 

 themselves, may procure it of Mr. Bancks, 441, Strand. 



The bellows are made of three small pieces of mahogany, Eeliowi, 

 each six inches long, three wide, and three tenths of an inch in 

 thickness. They are connected by folds of thin leather, glued 

 round their edges. The requisite pressure on the bellows is 

 given by a spring of brass wire. A kind of fusee was added, to 

 equalize the blast j something like a contrivance for the same • 

 purpose in Mr. Liston's perfect organ : — on trial it was found 

 in this case, to be of no advantage. 

 Vol.. XXXIII, No, 153.— NovEMBEE, 1812. M The 



