578 Prof. C. V. Raman on the Partial 



phases remaining practically identical, and the same as in the 

 simple Helmholtzian type. As regards the fourth and higher 

 partials, the following are the principal features exhibited by 

 the graphs, which embody the results of the investigation:— 

 (1) At the points of aliquot division, that is, when the bow is 



L2\ 1. 



10 ' 

 \ 6 



>■> 



^ 3 



2 

 I 

 









1 



"\ 











\ 





1 

















\ 









\ 









\ 

 \ 









\ 









\ 









\ 



90° 



45' 



$ 



■45' 



-90° 



'/9 '/8 '/7 ! /6 



Position of the Bowed Point. 



Amplitudes and Phases of the Fifth Harmon'c. 



applied at 1/b or 1/6 or 1/7 &c, the graphs give the 

 Helmholtzian values for the amplitudes. (2) Elsewhere, they 

 show marked deviations from the Helmholtzian values, both 

 in regard to amplitude and phase. (3) The deviations are 

 greatest when the bow is applied not far from a node of the 

 partial under consideration, and decrease as the bow is 



