CHAP, iv.] HEARING. 245 



produced by the ventriloquist. We can on the whole better 

 appreciate the distance of noises than of musical sounds, differ- 

 ences of quality as well as of intensity playing the same part in 

 the judgment of distance as of direction ; when a sound becomes 

 distant the intensity of the fundamental tone diminishes more 

 rapidly than do those of the higher partial tones, and hence the 

 quality of the sound is affected. 



