1918] 



Bioletti-Crucss-Davi : Chemical Composition of Grapes 



121 



t M 7 



t/me /n o/rys 



3? 70 75 — ^ ^8 3? W — 56 



~7Z 73 ^7 

 T/ME fN Dfrys 



Fig. 5 — Pedro Zumbon and Sultana, 1915. 



