20 



BULLETIN 48, U. S. DEPARTMENT OF AGRICULTURE. 



COMPARISONS OF THE SAME LOT OF CORN USED IN THE SECOND, 

 THIRD, AND FOURTH EXPERIMENTS. 



The lot of corn containing 17 per cent of moisture used in the 

 experiment begun on December 24, 1910, was also used in the experi- 

 ments begun on March 2 and on May 11, 1911. One car of this lot of 

 corn remained on the track at Baltimore and one car of the same lot 

 "was shipped to Chicago and returned to Baltimore in each of the 

 three experiments. 



In figure 7 a comparison is made of the loss in weight of the corn 

 in this lot in each experiment. In the experiment begun on Decem- 

 ber 24, 1910, when the temperature of the corn was below freezing, 

 ranging from 30.5° at the time of loading to 30.6° F. at the time of 



NUMBER OF OAYS fN GARS 



2. A- 6 8 10 12 14 16 18 20 22 24 26 



SHRINKAGE 

 IN WEIGHT 



Fig. 7. — Diagram showing the average temperature and the average loss in weight of the 

 one lot of corn used in the three experiments begun on December 24, 1910, and March 

 2 and May 11, 1911. 



unloading, the shrinkage was 0.07 of 1 per cent. This same corn in 

 the shipment made March 2, 1911, showed a temperature at the time 

 of loading of 40° and at the time of unloading of 40.6° F. In this 

 case the shrinkage was 0.23 of 1 per cent. In the shipment made on 

 May 11, 1911, the average temperature of the corn at the time of 

 loading was 01.4°, while at the time of unloading the average tem- 

 perature was 93° F. The average percentage of shrinkage was 0.49 

 of 1 per cent. 



SUMMARY OF THE SECOND, THIRD, AND FOURTH EXPERIMENTS. 



A summary of the results of the second, third, and fourth experi- 

 mental shipments, with special reference to the average moisture con- 

 tent, the percentage of shrinkage, and the temperature of the corn 

 at the time of unloading the 12 cars in transit from Baltimore to 



