A. M. Mayer— Researches in Acoustics. 179 
figs. 4, 5 and 6, I have drawn the resultant curves formed 
by combining the curves of musical notes corresponding to the 
various consonant intervals indicated below the curves. 
these curves are the resultants formed by the combination of the 
composite vibrations of musical notes, it follows that the com- 
ponents of these curves are not simple harmonics, as in the case 
of fig. 8, but are derived from the resultant of fig. 38, by reduc- 
ing to one-fourth the amplitude of that curve and by taking 
wave-lengths corresponding to the intervals indicated below the 
figures. 
> 
m 
AA: 
Resultant curve of a musical note combined with tts major third. 
All of the curves which I have given in this paper a saving 
drawn on a large scale and then reduced by photograp ny toa 
size suitable to be transferred to the engravers block. 
