Tille aud Hiinkel, Tlie Puisonoiis Eftecl Exerted etc. 303 



tluit of sodium chloride about 1/4. riainly, tlicrcfore, tlie nnioii 

 lias very strong" toxic propertics tOAvards lupiiics. 



Whcii the liydrogen of tlic OH gioup is replaced by CII3, 

 we obtain fiom phenol, anisol, from pyrocatechol, thc monomethyl 

 cther, guaiacol. 



Anisol, CgHsOCHs. 



, a ". Table XXXIX. 



Begun May 29, 4 : 45 V. 1\[, 

 Grain-mol. per liter. Linictli Mav '20. Lenf,'tli IMav '21 



2: 85 P.M. 

 1/200 



1'400 



1 800 



(V) 



15,5 

 18,0 



From this table, it appcars tliat thc toxic at-tion of plinidl 

 is approximately tlic same as that of its metliyletlier, anisol, 

 about one gram moleculc in four Imndrcd liters first permitting 

 growth. Filaments of Spirogyra placed in Solutions of this 

 SLibstance Avere found after nearly tAventy hours to survivc iirst 

 in a conccntration of about one gram-moleculc in threc hundrcd 

 liters, a some Avhat Aveaker Solution than thc corrosponding con- 

 ccntration of phenol ])roducing the same rcsults. In cells of 

 Spirogyra killed in an anisol Solution (1/200 gram-moleculc 

 per liter) thc Chlorophyll loses its spiral form and collccts in one 

 or more round masscs, but the protoplast docs not shrink aAvay 

 markcdly from thc cell Avall. 



Guaiacol, C6H4 (OCII3) (OII) = 1:2. 

 Table XL. 



Begun May 19, 4 : 30 P. M. 

 Gram-mol. per liter. 



1/400 



1/800 



1 ICOO 



'n 



