STORAGE, RESPIRATION, AND GROWTH. 47 
able for analysis could be obtained. ‘The last stages of ripening, 
therefore, could not be followed. ‘This same observation is true of 
the other varieties of summer apples. No sample could be obtained 
which became fully ripe in the chemical sense—that is, in which the 
starch had completely disappeared. 
In the first sample of summer apples examined very little sucrose 
CAE ce ae 
Lie te 
Y 
* 
| Net TS ee 
NUTTY 
HTN 
N 
BERN 
NS, 
HE NT ‘ 
Ht Hh be HUE 
HL EELS | nH bee d 
TTT Z| a 
(xem eal oa ea SS Ea Ee SE (a Be J ee 
EN VR da eT el PS a a a 
>< Se 
Refrigerated subsamples --------- 
Fic. 13.—Chart showing chemical changes in summer apples (Early Strawberry) during growth 
(total solids basis). 
was found, showing that the work was begun early in the life history 
of the fruit. The content of sucrose increased steadily, however, until 
the end of the experiment. It is specially noteworthy that the per- 
centage of sucrose increased even while the starch was forming. At 
the beginning of this work the sample contained a larger percentage 
