SHIPMENT OF RED RASPBERRIES. 



33 



shows these differences to be consistent for all inspections. The pre- 

 cooled cars show similar differences, the bottom having 2.6 per cent of 

 decay and the top 5.6 per cent at the first withdrawal inspection. 



Table IX. — Decay in the top and bottom tiers in commercially handled red 

 raspberries shipped to Grand Forks, N. Dale., under ordinary icing, with and 

 without precooUny, in 1912. 





Decay, precooled. 



Decay, nonpreeooled. 



Time in iced car. 



On withdrawal. 



1 day after with- 

 drawal. 



On withdrawal. 



1 day after with- 

 drawal. 





Top. 



Bottom. 



Top. 



Bottom. 



Top. 



Bottom. 



Top. 



Bottom. 



4 days 



Per cent. 

 5.6 

 6.5 

 15.6 



Per cent. 

 2.6 

 3.0 

 7.3 



Per cent. 

 10.4 

 16.1 

 24.9 



Per cent. 

 7.3 

 11.1 

 17.1 



Per cent. 



9.4 



14.2 



28.1 



Per cent. 

 5.5 

 9.6 

 17.4 



Per cent. 

 18.9 

 30.5 

 44.0 



Per cent. 

 8.7 





20.5 



8 days 



28.7 











TEMPERATURE CONDITIONS IN AN ICED REFRIGERATOR CAR. 



Temperature readings taken during the season of 1913 in a car of 

 blackberries in transit from Puyallup to Grand Forks show clearly 

 the reason for the 

 marked differences in 

 decay in berries in 

 the top and bottom 

 tiers. Figure 26 il- 

 lustrates this range 

 of temperatures. The 

 upper curve shows 

 the temperature of 

 the fruit in the top 

 tier, temperature 

 readings being taken 

 at the following 

 points: Next to the 

 bunker, b a 1 f w :i y 

 front the bunker to 

 the door, and in the 

 middle of the car. 

 The temperatures in 

 the lower curve were taken in the bottom tier in the same relative 

 po itions in the car ;in<l were the average of readings taken at three 

 point-, the same as in the upper curve. The middle curve is simply 



ail average of the top and bottom tier readings. In some cases the 



difference in average temperature between the top and bottom crates 

 wot more than 20 degrees, enough to account for the difference in 

















































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August II 



Auausr 12 



August /3 



August M 



FlG. 26. -Diagram illustrating the average temperature of 

 I'ruii in in|i ;iini bottom Uits and average temperature 

 of all fruit in the car of blackberries In transit from 

 Puyallup, Wash., to (irand Forks, N. Dak., season of 

 1013. 



