TABT.K M—ConHnued 





4 





Dnrnlion 



lowest ron- 



Lowest rnn 



J 



Conrentra- 





 







of exiH-ri- 



tentration 



central jou 



tion causing 



Rcniurka 



No. 



Compound 



\* t-nl in 



t Rising 



causing 



^eatest 



^^ ^^ ^^H ^ V V l-^P ^r ^F^ nv 







tiays 



' deal a 



injury 



stimulnlinn 





iH 



Pipcridin (neulralm*d) 



7 



100 p )m 



25 i>pm 



r ppm 



' 



19 



rhinr.l n 



6 



500 pprn 



1 



1 



5 l'i">' 



j 



1 

 1 



4 





\/ 



1 

 1 



A 



1 







1 



i 

 1 

 1 



! 





N 



i 



i 













30 



i 





II 



250 ppui 



5 Pl"i^ 





^^^ 



s 



^ 



^ 



2t 



rjioiatfcliin 



12 



500 ppm 



i 35 ppm 



I ppm 











h 



2 



1 . 



23 



Rfsorcin 



10 



looo ppm 



50 ppm 



1 



I ppm 







C(,H4(OH)a, 1:3 ' 







1 

 1 





33 



Hydrurluiitme 



0,H4(()H)., I = 4 



9 



500 ppm 



25 pi>m 



5 PP"i 





24 



PhlorogJLicin 



Uii,(OU)3, 1:3:5 



T3 



500 ppm 



25 ppm 



I ppm 



1 

 1 



t»J 



35 



Arhuiin 



12 



500 ppm 



25 pjim 



I ppm 



i 



26 



Vanillin 



,CHO 

 CI 13^0 . CH3 



9 



500 jjpm 



I ppm 







27 



Vanillir acid 



7 



100 ppm 



25 ppm 



5 l>pn"» 





.COOH 

 C,H,^0 . CH3 











g 









M 





3 



