THE GBAPE. 



13 



In the first place, I shall therefore dwell on the 

 nature of the components of the ash of the wood. 



The branches of vine have the following ash com- 

 ponents in 100 parts : I., according to Hruschauer ; 

 II., according to Crasso ; III., according to Levi.* 



The following results appear to me to deserve less 

 confidence, like those obtained by Levi, because the 

 proportion of soda is so large. 



* Ann. der Chemie u. Pharm. Bd. 54, s. 332, Bd. 62, s. 59, Bd. 50, 

 s. 128. 



