﻿REFKIGERATION OF DRESSED POULTRY IN TRANSIT. 



29 



were in immediate contact with the poultry packages containing the 

 electric thermometers. The records are given in pairs, thermograph 

 and thermometer, according to their position in the car. The tem- 

 perature of the air in the car was not appreciably affected by the small 

 changes which occurred in the atmospheric temperature. The tem- 

 perature inside the poultry boxes was almost constant, even in those 

 packages next to the bunker where the temperature of the air was 7 

 or 8 degrees lower for a day or two. The car in which this shipment 

 was made was of type C (Table 5) . Figure 17 presents the records of a 

 shipment made in a type B car in very cold weather. The fluctua- 

 tion in car temperature was marked and was very similar in all parts 

 of the car. 



WARM WEATHER SHIPMENTS. 



The records of a shipment made in April are shown as figure 18. 

 The weather was warmer than that which prevailed during the two 

 shipments previously 

 described. " This ex- 

 periment again shows 

 that the temperature 

 of the poultry does not 

 fluctuate with the wide 

 changes of the air of 

 the car. Its fluctua- 

 tions are much slower 

 and smaller. The lower 

 chart indicates the 

 usual prevailing differ- 

 ence in temperature be- 

 tween the bunker end 

 and center of the car. 



85 



65 



55 



4-5-f- 



25 



6pm 6am. 6p-m. 6am. 



Fig. 14.— Temperatures in large ear with three layers of half-inch 

 insulation on roof, walls, and floor. 



The charts shown as figure 19 are a detailed representation of the 

 temperature records of a shipment made in April, 1912. This car 

 was accompanied throughout the trip by two messengers. The poul- 

 try was packed in small barrels, or kegs, which were loaded in a single 

 course, one barrel high. Sections I, II, and III of this chart are ther- 

 mograph records, and IV, V, and VI are electric thermometer records. 



The car, which was of type C, was insulated with hair felt, which 

 in the floor was water soaked and very much decomposed. This 

 faulty floor reduced the efficiency of the car to 0.71 as compared with 

 1.03, the average for this type. It resulted, in some instances, in 

 higher temperatures at the floor than at the top of the barrel. 



The temperature (F) of the poultry in the middle of the barrel next 

 to the bunker changed very little, the change being much slower than 

 in the air outside of the barrel (K and L) . Thermometers, G and H, 



