REPORT OF CRANBERRY SUBSTATION FOR 1915. 11 



series, being used with the three boxes of the first lot, and each of those 

 of the second lot being sampled six times, one sample being taken from 

 among the surface berries at each end of the box; one from the surface 

 berries at the middle of the box; one from the bottom berries at each end 

 of the box; and one from the bottom berries at the middle of the box. 

 By this examination the percentage of decay among the berries of the 

 three full boxes was determined to be 10.31 per cent., while it was found 

 to be only 7.63 per cent, in the nine one-third full boxes, the berries which 

 were subject to the better ventilation thus showing the smaller proportion 

 of rot. 



As in all the other storage tests discussed in this report, the work of 

 examining this fruit was done by "screeners" under the writer's super- 

 vision, samphng cups and hand-graders being used as described in the 

 discussion of the first series of tests. 



5. Ninety-six tin 1-quart cans filled with Late Howe cranberries during 

 the last week in October were stored with the covers on tight, but not 

 sealed. These berries were examined on the 4th and 5th of January, the 

 contents of each can being divided into five separate samples which were 

 taken in order from the top to the bottom of the can. Each of the first 

 four samples filled the samphng cup ; but the fifth, consisting of what was 

 left at the bottom of the can, varied somewhat and only partly filled the 

 cup. The totals of the counts of each of these samples from all of the 

 ninety-six cans in this series of tests are given in the following table : — 



Table 6. — Relationship of Ventilation (Relative Humidity) to Rate of 

 Decaxj. — Results of Fifth Series of Storage Tests. 



Sample. 



Total Number 

 of Berries in 

 96 Samples. 



Total Number 



of Rotten and 



Partly Rotten 



Berries in 



96 Samples. 



Percentage of 



Rotten and 



Partly Rotten 



Berries. 



1, 

 2, 

 3, 

 4, 



5, 



8,784 

 8,800 

 8,650 

 8,626 

 5,595 



1,751 

 2,159 

 2,466 

 2,755 

 1,875 



19.93 

 24.53 

 28.51 

 31.91 

 33.51 



The table shows there was a rapid and constant increase in the per- 

 centage of decayed berries from the top to the bottom in these cans. As 

 their only ventilation took place around the close-fitting covers, it seems 

 certain that the top berries were better ventilated than those lower down 

 in the cans. The results of this series of tests, therefore, evidently strongly 

 confirm those obtained in the four series previously discussed. 



(6) To determine the Relative Water Loss of Cranberries in Storage in 



