8 



BULLETIN 48, U. S. DEPARTMENT OF AGRICULTURE. 



Table IV. — Weight of corn in each car immediately after loading on December 

 ?/, 1910, and the .shrinkage, or loss in weight, together with the moisture con- 

 tent at time of loading and the average temperature of the corn at time of 



loading and unloading. 



Lot 

 No. 



Car designation and movement. 



Moisture 

 content 

 of corn 

 when 

 loaded. 



Net corn 

 in car 

 when 



loaded. 



Shrinkage, or loss 

 in weight. 



Pounds. Percent 



Average tempera- 

 ture of corn when- 



Loaded. 



Un- 

 loaded. 



Car 1-C, transit, Baltimore to Chi- 

 cago and return 



Car 1-B, held on track in Baltimore 

 yards 



Car 2-C, transit, Baltimore to Chi- 

 cago and return 



Car 2-B, held on track in Baltimore 

 yards 



ICar 3-C, transit, Baltimore to Chi- 

 cago and return 

 Car 3-B, held on track in Baltimore 

 yards 



Car 4-C, transit, Baltimore to Chi- 

 cago and return 



Car 4-B, held on track in Baltimore 

 yards 



Per cent. 

 22.0 



19.0 



17.0 



13.3 



Pounds. 

 07, 140 



67, 140 

 67,050 



67, 070 



57, 080 



56, 890 



67,080 



07, 100 



230 

 140 



160 

 50 

 20 

 90 



110 



.34 

 .21 



.24 



.09 



.04 



.13 



.16 



F. 

 31.0 



31.0 

 30.0 



30.0 



31.0 



30.0 



34.0 



35.0 



F. 

 33.0 



38.2 

 29.0 



31.7 



29.0 

 32.2 

 29.0 

 33.5 



As shown in Table IV and figure 3, the car containing corn of 22 

 per cent moisture which was shipped from Baltimore to Chicago and 

 return lost 0.27 of 1 per cent, while the car containing the same kind 

 of corn but which was held on the track at Baltimore lost 0.34 of 1 

 per cent. The corn from lot No. 2, containing 19 per cent of moisture, 

 showed a loss in weight of 0.21 of 1 per cent for the car en route from 

 Baltimore to Chicago and return, as compared with a loss of 0.24 of 

 1 per cent for the duplicate car held on the track at Baltimore. The 

 reverse is true, however, of the corn containing 17 per cent of moist- 

 ure. In this lot the shrinkage was 0.09 of 1 per cent in the corn in 

 transit and only 0.04 of 1 per cent in the car of corn that remained on 

 the track at Baltimore. It should also be noted in this connection 

 that this lot of corn was of exceptional quality, showing the highest 

 percentage of sound corn at the beginning of the experiment. The 

 corn with 13.3 per cent of moisture lost 0.13 of 1 per cent in transit 

 and 0.10 of 1 per cent on the track at Baltimore. As in the first ex- 

 periment, the losses in weight of the four lots of corn used varied 

 according to the moisture content of the corn, with the exception of 

 lot No. 4. The fact that this lot of corn, which had an average 

 moisture content of 13.3 per cent, lost more in weight than the corn 

 that contained 17 per cent of moisture was probably due to the excep- 

 tionally good quality of the corn in lot No. 3, or possibly to the ad- 

 mixture of a larger percentage of finely broken corn in lot No. 4, 

 although no leakage, even of the finely broken corn, could be de- 

 tected in any part of the cars. 



As shown in Table IV and figure 3, the temperature of the corn at 

 the time of loading it into the cars which were shipped from Balti- 

 more to Chicago and return ranged from 30° to 34°, with an average 



