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STORAGE, RESPIRATION, AND GROWTH. Sul 
apples, but it was found that such was not the case. At each picking 
the sample was divided into two portions, one of which was placed in 
a refrigerator at a temperature of from 12° to 15° C. (58.6° to 59° F.), 
and the apples so kept were examined after the lapse of several days. 
The results of the examinations of these subsamples which were kept 
in the refrigerator are printed in italics in Table VI, and they are also 
expressed on the charts (figs. 13 to 16) by dotted lines. 
Referring to figure 13, in which the composition of the Karly Straw- 
berry apples, based on total solids, is shown graphically, it is seen 
that the composition of the sample of apples received June 17, 1903, 
changed with remarkable rapidity. The sample at that time contained 
24 per cent of starch, 4.6 per cent of sucrose, and 24 per cent of invert 
sugar. After being kept in the refrigerator six days, it was examined 
and found to contain 5.9 per cent of starch, 12.9 per cent of sucrose, 
and 38.2 per cent of invert sugar. Thus, in six days the apples which 
were picked from the trees and kept in the dark at a temperature con- 
siderably lower than that to which those remaining on the trees were 
exposed, contained less starch than the apples which ripened fully on 
the trees forty-three days later, and almost as high a content of invert 
sugar. At the same time it must be borne in mind that the apples 
remaining on the trees during this period continued to grow the whole 
time, whereas the transformation of starch in case of the apples 
stored in the ice box was limited to a few days. For this reason the 
parallel drawn is not entirely applicable. 
On several succeeding dates the samples drawn from the trees were 
preserved in the refrigerator for a few days with similar results. It 
was found with each successive picking that apples which were stored 
in the refrigerator developed somewhat more slowly than on the pre- 
ceding occasion. Thus, each succeeding curve representing the change 
of the apples kept in the refrigerator is a little less vertical than that 
preceding it. This demonstrates that the less mature the fruit is when 
gathered the more rapid are the changes tending to maturity after 
picking. It would seem, therefore, that, from a commercial stand- 
point, apples which are fairly mature may be expected to retain a 
more constant composition than those picked in an immature state. 
The same generalization also applies to the charts representing the 
changes in composition in other varieties of summer apples, and are 
especially borne out in the composite chart (fig. 16), which gives the 
average of the results obtained with the three varieties of summer 
apples. ; 
The work on the winter apples was much more satisfactory than 
that on the summer appies, because of the fact that they ripened more 
simultaneously and the problem of securing a representative sample 
was not so difficult. For this reason the curves representing the 
changes of composition of the winter apples (as shown by figures 17 
