﻿REFRIGERATION OF DRESSED POULTRY IN TRANSIT. 



33 



lino with scientific findings and practical experience in the preserva- 

 tion of dressed poultry by refrigeration in the packing plants and 

 warehouses. That definite standards have not heretofore been ap- 

 plied to the performance of a refrigerator car is due to the difficulty 

 of accurately determining what takes place between the closing of the 

 car doors and its arrival at its destination. Without such informa- 

 tion car builders were working more or less in the dark. 



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THERMOGRAPH, OUTS/DE ATMOSPHERE. 



-o- THERMOMETER READ/NGS. 



THERMOGRAPH, TOP OP LOAD, CENTER OP LOAD, P7/DDLE. 



II \ ~° — P- ELECTR/C THERMOMETER, TOP OP LOAD, CEA/TER OPCAR,P7/DDLE, OUTS/DE OP PACKAGE. 



» « « " " " " 77 77 /A/S/DE » 77 



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■ THERMOGRAPH, TOP OP LOAD, BUNKER END, MIDDLE- 



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■ ELECTRIC THERMOMETER, TOP OP LOAD, BUNKER END,P7/DDLE, OUTS/DE OF PACKAGE. 



" » " » " " " " /A/S/DE 77 77 



THERMOGRAPH, BOTTOM OP LOAD, CENTER OP CAR, A-7/DDLE. 

 n 77 77 "SUA/KEREND » 77 77 



Fig. 18. — Thermograph and electric thermometer records (April shipment). 



Efficiency of cars. — If the information furnished by 120 car-lot 

 shipments of dressed poultry in 120 individual cars of six different 

 lines can be accepted as conclusive, we must infer that most of the 

 refrigerated carriers of the United States are not able to maintain 

 sufficiently low temperatures during warm weather to transport a 

 low-temperature commodity, such as dressed poultry, under the best 

 of conditions. It is encouraging to observe that certain refrigerator 

 cars are much more efficient than others, and that their increased 

 efficiency apparently depends upon their construction. 



