Prof. A. M. Mayer's Researches in Acoustics, 521 



developing in the flame the serrations of the proper note of a 

 resonator and those of its octave are only produced when the 

 fundamental sound is intense. 



Fig. 4. 



Resultant curve, formed by combining the curve of a musical note with 

 that of its octave. X : A'; : : \ i i. 



Fig. 5. 



Resultant curve, formed by combining the curve of a musical note with 

 that of its fifth. X : X' : : 1 : '•§. 



