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BULLETIN 11, U. S. DEPARTMENT OP AGRICULTURE. 



on the inside of the barrel next to the side wall of the car, half way 

 between the bunker and door, showed a gradual rise of temperature, 

 G reaching 36.5° F. (2.2° C). It is interesting to note that on account 

 of the wet floor the poultry in the bottom half of the barrel was some- 

 times 2 or 3 degrees warmer than that in the top half. The poultry 

 in the middle portion of the car, away from the side walls, was likewise 

 gradually increasing in temperature (J), but lagged far behind the 

 temperature of the air in the car. The air hi the car became warmer 



6pm. 6am. 6p.m. 6a.m. 



75 



6p.m. 6am. 6p.m. 6a.m. 



Fig. 15. — 'temperatures in large cars with 2 inches of insulation on roof. 



during the day and again colder at night (III, VI) . Even the tem- 

 perature inside the poultry barrel along the side of the car was notice- 

 ably influenced (V, G) by the warm atmosphere during the day. 



CONCLUSIONS. 



The chemical data obtained by analyzing well-handled, dry-packed, 

 dressed poultry after transportation in refrigerator cars indicate that 

 the condition of this commodity is greatly influenced by the tempera- 

 tures prevailing in the car throughout the transit period. The rail- 

 roads have recognized that " dairy freight," which includes dressed 

 poultry, eggs, and butter, requires refrigerator service for the greater 



