298 COMPOSITION OF SOUND WAVES. 



ways at the same time, and, consequently, does not move 

 at all, but remains at rest as a node. The tone is due to 

 the vibrations of the two halves of the string, which thus 

 give the octave instead of the fundamental. The existence 

 of the node and segments will continue for some time after 

 the finger is removed. If riders be placed at (7, N and D, 

 the one at N will remain at rest while those at C and D 

 ^will probably be dismounted. 



463. Higher Overtones. In like manner, if the 

 vibrating string be touched at exactly one-third, one-fourth 



FIG. 234. 



or one-fifth of its length from one end, it will divide into 

 three, four or five segments, with vibrations three, four or 

 five times as rapid as the fundamental vibrations. If 

 touched at one-third its length, as represented in Fig. 234, 

 the tone will be the fifth to the octave of the fundamental ; 



