46 



The Philippine Journal of Science 



1913 



Oscillation frequency (— ). 



A 



4.6 

 4.4 



4.2 



c 



■2 4.0 



*o 

 m 



S 3.8 



"o 

 £ 



| 3.6 



© 



Z 3.4 



O 

 (Q 



1 3.2 



E 



£ 3-0 



to 

 o 



!c 



" 2-6 



si 



1 2A 



ro *. ^ 



E 2.2 



g> 2-0 

 1.8 



1.6 



1.4 



3000 32 34 



36 



38 



4000 42 44 



46 





























II 



III 





























































11 

 11 























11 







p ... 

















il 





/ 















1 







' / 



1 



■ 















A 



Last' 





\ 

 \ 



\ 



\: 



















* 



\ 

 t 



• 









































• 



















I 



■ 









































































































10.000 



I 



1.000 E 



ioo 3 



Fig. 5. — Curve I = methyl benzoate. 



Curve II and dot curve = benzyl alcohol. 

 Curve II and dash-two-dot curve = benzyl acetate. 

 Curve II and dash curve = benzyl methyl ether. 

 Dash-dot curve = benzyl chloride. 



