28 



BULLETIN" 274, U. S. DEPARTMENT OF AGRICULTURE. 



noticeable feature of the precooling was the improved appearance 

 of the precooled berries, which were decidedly brighter and fresher 

 than those held without precooling. 



PRECOOLING EXPERIMENTS IN THE SEASON OF 1911. 



The inspections were made in the same Avay as those previously 

 described for the careful-handling investigations. Table V and 

 figure 21 give the results of the precooling work during the season 

 of 1911. 



Table V. — Decay in commercially handled red raspberries that were immedi- 

 ately loaded and held in an iced car with and without precooling. 



Time in iced ear. 



Decay on withdrawal. 



Precooled. 



Non- 

 precooled. 



Decay 1 day after 

 withdrawal. 



Precooled. 



Non- 

 precooled. 



4 days 

 6 days 

 8 days 



Per cent. 



2.2 



9.1 



17.2 



Per cent. 

 5.9 

 15.4 

 27.3 



Per cent. 



9.5 



19.1 



36.0 



Per cent. 

 16.5 

 34.8 

 45.1 



Precooled, immediately loaded, commercially hand&d berries 

 showed 2.2 per cent of decay and the nonprecooled 5.9 per cent of de- 



PRECOOLED 



PER CESSTDSC/tY 



FOUR DAYS IN CAR 



2.2 ON WITHDRAWAL 5.9 

 9.5 ONE DAY LATER 16.5 



SIX DAYS IN CAR 



9.1 ON WITHDRAWAL 15.4 



19.1 ONE DAY LATER 34.8 



EIGHT DAYS IN CAR 



17.2 ON WITHDRAWAL 27.3 

 36.0 ONE DAY LATER 45. 1 



NON PRECOOLED 



per csssr osc^r 



1 ' 1 ' 1 ' 1 

 ■ 



1 ' 1 ' 1 ' 1 ' 1 ' 



IIIIIIIIIIIIIIH! 



lllllllllllllllllllllllllllllllllllllllllll 







Itlllll J1M1JII 1 JIM 1111 lillli HIIHI 1 111(1 1 Jtl lllll M JIIIH 



IIIIIIIIIilllllltilllltlllllMtllltllllllNlllllilllillllllllUllllltllltlllillllillltllltMlllllllllllllltlH 









to mi iiiiiiiiiilllllllliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii 



HllllilllillHlIMintHimilllMIIHIiHIIHIilllilllllUltlllHIllliUimHIIIIltlllllHHIIIHIlillJttliMIJmiHlUllllltllllJMHMtHI 







Fig. 21. — Diagram illustrating the percentage of decay in comparable precooled and 

 nonprecooled commercially handled red raspberries held in an iced car, season of 

 1911, at Puyallup, Wash., for four, six, and eight days. 



cay at the end of the 4-day period, and 9.1 per cent of decay and 15.4 

 per cent of decay, respectively, at the end of the 8-day period. The 

 after-withdrawal inspections are consistent with the withdrawal 

 results. The ratio of percentages of decay is much the same at the 



