224 



Journal of Agricultural Research voi. xviii. no. a 



notes taken January 23; the York Imperial stored October i, and the 

 notes taken February 1 1 ; the Yellow Newtown stored October 25, and the 

 notes taken April 7.- Three barrels of each variety were left continuously 

 in storage and three rolled into the hall for a 24-hour period once each 

 week during the first 2^ months of storage. The temperature of the 

 storage room stood at 0° C. (32° F.) or slightly above; during October 

 the hall had a temperature of 7° to 10° C. (44.6° to 50° F.), and in the 

 later months a day temperature of about 5° C. (41° F.) and a night 

 temperature of approximately 0° C. (32° F.) The hall doors were kept 

 open, giving free circulation of outside air. Resistance thermometer 

 bulbs were forced into apphs in the center of the barrels and temperature 

 readings taken when the apples were removed to the hall and again when 

 they were returned to storage. The temperature of the fruit was never 

 raised more than 1° C. (1.8° F.) by exposure to the hall temperature for 

 24 hours. In all the different tests the apples were held at 20° C. (68'^ F.) 

 for three days before the notes were taken. 



TABI.E VI.- 



-Effect of temperature changes upon apple-scald: Experiment at 

 Washington, D. C. 



Lot 



No. 



Percentage of scald. 



Grimes 



in com- 

 mercial 

 barrel. 



Grimes 

 in venti- 

 lated 

 barrel. 



In cold storage continuously 16 weeks 



As in I but at 20° C. (68° F.) i day at the end of 6 weeks' 



storage 



As in I but at 20° C. (68° F.) i day each at the end of 6 and 



II weeks' storage 



As in I but at 20° C. (68° F.) i day at the end of 11 weeks' 



storage 



As in I but in cold-storage hall i day each at the end of 5, 7, 



and 1 1 weeks 



As in I but in cold-storage hall i day each at the end of 7 and 



I I weeks 



As in I but in cold-storage hall i day at the end of 7 weeks. . . 

 As in I but in cold-storage hall i day at the end of 11 weeks . 



35 

 31 

 25 

 38 



35 

 28 



35 



30 

 18 



5 

 35 

 10 



5 

 12 



23 



Table VII. — Effect of temperature changes upon apple-scald: Experiment at 



Wenatchee, Wash. 



