New York AGRICULTURAL EXPERIMENT STATION. 139 
deducted from the total acid gave the volatile acid, which was 
calculated as acetic. 
The amounts of alcohol, of ash and of nitrogen were found by 
the methods in common use. 
Below we give the results of analysis of 13 samples of fresh 
apple juice. 
Taste I—ANALYSIS OF APPLE JuICcE Usep IN EXPERIMENTS. 
Gates Fixed | Vola- 
Specific Redue- Su- | Nitro- acid tile 
Oo- KInD oF APPLE. gravity. | Solids. ing | crose.| gen. | Ash. as | acid. 
2 sugars. | malic. 
| Per ct. | Per ct. |Per ct.|Per ct./Per ct.|Per ct.|Per ct. 
1 | Northern Spy..... pe eee OGS lo 24 81008 | 2.69 015 | 0.19 | 0.52 .02 
2 | Northern Spy......... 1.065 | 15.49 9.95 | 3.43 .014 | 0.19 | 0.51 .03 
SiMe NOLENEENUSDYs. «5s ass 6 1.064 | 15.12 9.73 | 3.12 | .013 | 0.20 | 0.49 .04 
4 | Roxbury Russet....... 1.069 | 16.46 S4854| S128 | O21 WhOs23 OFGS 04 
5 | Roxbury Russet....... 1.072 | 16.85 9.06 | 5.46 | .020 | 0.20 | 0.66 02 
6 | Mixed Russet......... 1.074 | 17.19 9.23 | 5.78-| .023,| 0:28 | 0.62 .05 
71) BEYOIG bya 0 Saree eae 1.060 | 14.43 8.507 | 4.37 |) O17 | 0.23) 0.59 .04 
8 | Reinette Pippin....... 1.056 | 18.50 9.14 | 2.67 .010 | 0.21 | 0.47 .04 
9 | Mixed falland winter...) 1.065 | 15.43 9.33 | 4.26 | .016 | 0.27 | 0.51 .03 
10 | Mixed falland winter...| 1.057 | 13.73 9.23 | 3.01 | .014 | 0.18 | 0.41 .03 
11 | Mixed fall and winter .. 1.060 | 14.01 7.49 | 4.33 -020 | 0.27 | 0.59 03 
17 | Mixed fall and winter...| 1.065 | 15.27 | 10.34 | 2.68 | .021 | 0.31 | 0.41 .00 
29 | Mixed fall and winter... 1.062 | 138.97 9.64 | 3.01 .029 | 0.27 | 0.54 .02 
Average of all......} 1.064 | 15.11 9:28 | 3.85 | .018 | 0.23 | 0.53 .03 
The data in Table I are summarized in the following state- 
ment: 
(1) Specific gravity.—The specific gravity in the different sam- 
ples of apple juice varied from 1.056 to 1.074 and averaged 
1.064. ; 
(2) Solids.—The percentage of total solids varied from 13.50 
to 17.19 and averaged 15.11. 
(3) Reducing sugars.—The amount of reducing sugars varied 
from 7.49 to 10.34 and averaged 9.28 per cent. 
(4) Suerose-—The percentage of sucrose varied from 2.67 to 
5.78 and averaged 3.85. 
(5) Total sugar.—The total amount of sugar, equivalent to 
invert sugar, varied from 11.89 to 15.32 and averaged 13.33 per 
cent. . 
(6) Nitrogen.—Nitrogen varied in amount from 0.01 to -0.029 
per cent. and averaged 0.018 per cent. 
(7) Ash.—The percentage of ash varied from 0.18 to 0.31 and 
averaged 0.23. 
