CHEMICAL COMPOSITION OF GRAPES 427 



TABLE 3 EFFECT OF LOCATION OF BUNCH ON CANE 



Nearest base of cane Nearest tip of cane 



Vine Balling Acid Balling Acid 



Muscat, no. 1, cane 1 25.1 .73 23.7 .83 



Muscat, no. 1, cane 2 25.6 .79 24.8 .80 



Muscat, no. 2, cane 1 25.1 .85 24.6 .87 



Muscat, no. 2, cane 2 25.2 .78 24.7 .85 



Muscat, no. 3, cane 1 23.0 .79 22.6 .82 



Muscat, no. 3, cane 2 24.5 .73 23.8 .73 



Muscat, no. 4, cane 1 24.2 .90 25.2 .90 



Muscat, no. 4, cane 2 24.5 .68 23.8 .83 



Tokay, cane 1 21.2 .67 21.2 .80 



Tokay, cane 2 23.0 .63 22.4 .76 



Sultanina, cane 1 23.3 .61 22.3 .62 



Sultanina, cane 2 22.5 .61 23.0 .63 



Sultana, cane 1 23.2 .78 21.6 .70 



Sultana, cane 2 21.1 .90 20.0 1.20 



Palomino, cane 1 25.1 23.5 



Palomino, cane 2 22.0 23.7 



Means 24.9 .75 23.1 .81 



The data indicate that bunches at the base of the cane ripen in most 

 cases more rapidly than those near the tip, although this relation does 

 not always hold and may be reversed in some instances. 



4. Variation in Balling Degree of Must from Bunches of Similar 

 Appearance and Size from Same Vineyard and Gathered on Same 

 Date. A five-pound basket of grapes of first crop and selected for 

 similarity of color, size of bunch, and general appearance was picked 

 from each of a number of vines in the same vineyard. Vines of 

 similar size and appearance were chosen. Several varieties were rep- 

 resented in the experiment. Tests of Balling degree only were made. 



TABLE 4 VARIATION IN BALLING IN MUST FROM GRAPES OF SAME VARIETY PICKED 

 FROM DIFFERENT VINES OF SIMILAR APPEARANCE 



Vine Mean Maximum 



Variety number Balling Balling variation 



Cornichon 3 14.5 ...... 



Cornichon 6 15.0 



Cornichon 9 14.2 



Cornichon 11 14.7 



Cornichon 16.1 14.9 1.9 



Emperor 10 12.0 



Emperor 11 14.5 



Emperor 13 15.2 



Emperor 14 15.5 



Emperor 17 15.0 14.4 3.5 



Malaga 5 . 18.5 



Malaga 6 17.2 



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