217 



" On the Production of Vibrations and Sounds by Electrolysis." 

 By GEORGE GORE, Esq. Communicated by Professor TYN- 

 DALL. Received November 12, 1861. Read December 12, 

 1861*. 



1. Under some circumstances, which 1 have already briefly recorded 

 (Proceedings of the Royal Society, No. 44. p. 177), vibrations of 

 singular beauty, accompanied by definite sounds, are produced at the 

 surfaces of mutual contact of a liquid metal and electrolyte by the 

 passage of an electric current. 



2. The most convenient mode of obtaining the vibrations and 

 sounds is as follows. Take a circular disk of thin sheet glass about 

 2 or 3 inches in diameter, and procure a thin hoop of glass about 

 1 inch wide and of the same diameter as the disk, by cutting off the 

 end of an ordinary glass shade. Coat one edge of the hoop with 

 melted sealing-wax, and place the hoop with that edge downwards 

 upon the disk in an oven so that the two may become securely united. 

 Procure another hoop about -^th of an inch wide, and of a diameter 

 about ith of an inch less than the previous one, and fix it to the same 

 side of the disk concentric to the other in a similar manner, and make 

 the junctions water-tight. A circular vessel surrounded by an an- 

 nular space or vessel will thus be obtained, as represented in the 

 annexed figure ], which gives a perspective view of the complete 

 vessel supposed to be cut in two. 



Fig. 1. Fig. 2. 



A second form of vessel may be made of the shape represented in 

 fig. 2, open at each end ; and a bottom formed to it by sticking on 

 with sealing-wax, either a flat disk of glass or an inverted watch- 

 glass. An equally suitable vessel may be made in one piece of glass 

 by forming what is termed by glass-blowers a "chevril" or raised 

 edge in the bottom of a cup (see figs. 3 and 4) ; or by sticking a 



* An abstract of this Paper has already appeared in the ' Proceedings,' vol. xL 

 p. 491. It is now printed in full by order of the Council. 



VOL. XII. R 



