142 



BALCH, ON NATIVE GRAPES. 



results we can^consider it so with small inaccuracy 

 percentage results obtained are as follows : 



The 



The sugar percentage marked * in the table were not 

 obtained by analysis, but are Dr. Gall's for the corres- 

 ponding densities, 



From these analyses native grapes would seem to be 

 divided into three classes : 



1st. Those in which the proportions of acid and sugar 

 are well balanced ; as Delaware, Rogers' 4 and 15, Allen's 

 Hybrid, &c. ; these grapes should yield good wine. 



