Dr. It. Konig on Manometric Flames. 



107 



vibrate with great force. When E is sung, we see the funda- 

 mental accompanied by the octave weakly, and very strongly by 

 the twelfth. The double octave and its third show vibrations of 

 moderate intensity ; and the seventh flame shows traces of the 

 existence of the seventh tone. The letter I sung on c gives a 

 strong movement to the flames of the octave and the funda- 

 mental only, while all the other flames are in repose. 



The resonators 7 and 8 (c) of the apparatus cause their flames 

 to vibrate with difficulty, and the notes must be very strong. 

 We have now reached the limits within which the flames can be 

 usefully employed. 



As this apparatus does not permit us to choose the funda- 

 mental tone of the vowel or of any other sound which is to be 

 analyzed, it is adapted rather to demonstration than to further in- 

 vestigation. However, to make it more useful for the latter pur- 

 pose, I have constructed a second model (fig. 12), in which the 



Fig. 12. 



