178 



The Philippine Journal of Science 



1913 



Oscillation frequencies. 

 22 24 26 28 3000 32 34 36 38 4000 42 44 46 



5.6 



5.4 



5.2 



,5.0 



14.8 



= 4 



1« 



JS 3 



3.2 



S3.0 



S 



S2.8 



2.6 

 2.4 

 2.2 



2.0 

 1.8 



: i 



































































































• \ 

























*A 

























•\ 

























• 



























•\ 































































































































































































































V 



,y 























V 



\._* 





\ 

 \ 

























\ 



r 







100,000 



lO.OOOfc 



"8 



I 



s 



c 



1,000 J! 



100 



Fig. 1. Full curve:=white phthaloxime. 

 Dot curve = yellow phthaloxime. 

 Dash curve = benzoate of white phthaloxime. 



Description of fig. 1. — The region of greatest difference be- 

 tween the two curves is found in the total absorption at high 

 concentrations. The upper limit of these curves from log. 5.3 

 to 5.7 represents higher concentrations than can be conveniently 



