44 



The Philippine Journal of Science 



1913 



Oscillation frequency (— ) . 



A 

 26 3000 32 34 36 38 4000 42 



44 06 





1 









































1 





















1 



























































1 



4 





















+ 





















\l 



i 



i 







/ 













i; 



i 







,' 



' A v 











t 



» 







/ 



7 > 



» \ 









«\ 



i 





/ 



t 



/ ■ * 

 / • ' 



« i 

































\ 



/ 



1 / 













+ 





A 



/ 



/ / 





♦i 











\ 





* 















♦ 





« 



* < 















* 



\ 





• / 







v 5i 















X 



f ,*,y 





i\ 











\ 



% »-*- 





t \* 





|M 











^ 



/ 









^V 





















> 



Lf. 



















* 



T"*- 



' r S 





















''v^ -1 * 



^ 



















*% 1 





10,000 



1,000 o 



100 i 



a 



= 4.0 

 o 



1 3.8 

 •3 3.6 



£ 



o 



§ 3.4 



o 



- 3.2 



o 



" 3.0 



o 



I 2.8 

 1 



.5 2 - 6 



W 

 00 



,M 

 u 



I 2.2 



_> 



rt 2.0 



% 

 u 



o t.8 



CO 



s 



■5 1.6 



"C 

 rt 

 bo 



O 1./) 



Fig. 4. — Full curve = salicylic acid and methyl sali- 

 cylate. 



Dash curve = methyl salicylate with 1 equiv- 

 alent of sodium ethoxide. 



Dot curve = salicylic acid with 5 equivalents 

 of sodium ethoxide. 



Dot and dash curve = salicylic acid with 300 

 equivalents of sodium ethoxide. 



Dash and cross curve = methyl salicylate with 

 600 equivalents of sodium ethoxide. 



salicylic acid in alcohol in the presence of 5 and 300 equivalents 

 of sodium ethoxide, and methyl salicylate in alcohol in the 

 presence of 1/10, 1, 3, and 500 equivalents of sodium ethoxide 

 and in the presence of hydrogen chloride. We have observed 

 that the curves obtained with water and with alcohol as the 

 solvent are practically identical and in accord with data given 

 by Hartley. 



The activity of the carbonyl group of salicylic acid is reduced 

 in the easily ionized sodium salt and also by the fixation of the 

 labile hydrogen atom by methyl. This is shown in the charts 

 of the absorption spectra both by a reduction in the persistence 



