CHEMICAL COMPOSITION .OF AMERICAN GRAPES. 3 



samples was made and analyzed. Analyses of 34 individual samples 

 were also made. 



The samples taken in North Carolina were selected in the vine- 

 yards by J. H. Jeffries, superintendent of the Pender Experiment 

 Farm, which is owned and operated by the North Carolina State Board 

 of Agriculture. Mr. Jeffries kindty undertook this work and sent the 

 samples to Raleigh, where they were analyzed. Dr. B. W. Kilgore, 

 chief chemist for the State Board of Agriculture at Raleigh, fur- 

 nished laboratory room, apparatus, etc., and gave every assistance 

 possible. 



CHEMICAL COMPOSITION OF GRAPES EXAMINED. 



The data represented in Tables 1 and 2 are arranged by localities, 

 and the average, maximum, and minimum results are given when 

 more than one sample was taken for each locality; a total average of 

 all the analyses of each variety is given with maximum and minimum 

 results as to solids, sugar, and acid on all the samples of any given 

 variety examined. The specific gravity determined by a pycnometer 

 at 15.6° C. is given individually for all single samples and the aver- 

 age is given where two or more samples are recorded for any locality. 

 The determinations as to composition are given in grams in 100 cc 

 of expressed juice. 



