SHRINKAGE OP SHELLED CORN IN CARS IN TRANSIT. 7 



weighing's and temperature readings were made on the cars in transit. 

 These eight cars were each equipped with six electrical resistance 

 thermometers, the relative position of which is shown in figure 1. 

 The average condition and quality of the four lots of corn at the 

 beginning of the experiment, as represented by the results of the 

 analyses of samples taken when the corn was being loaded into cars, 

 are shown in Table III. 



Table III. — Factors showing the condition and quality of each lot of corn in 

 the second experiment when loaded into cars on December 2Jf, 1910. 



Lot 

 No. 



L-. 



Car designation and movement. 



[Car 1-C, transit, Baltimore to Chicago and 



i return 



(Car 1-B, held on track in Baltimore yards.. . 

 (Car 2-C, transit, Baltimore to Chicago and 



I return 



[Car 2-B, held on track in Baltimore yards. . . 

 (Car 3-C, transit, Baltimore to Chicago and 



< return 



(Car 3-B, held on track in Baltimore yards... 

 [Car 4-C, transit, Baltimore to Chicago and 



< return 



iCar 4-B, held on track in Baltimore yards.. . 



Moisture 

 content. 



Per cent. 

 22.0 



19.0 



17.0 



13.3 



Sound 

 corn. 



Per cent. 

 94.3 



96.9 



98.2 



97.9 



Weight 



per 

 bushel. 



Pounds. 

 50.9 



54.1 



55.4 



56.2 



Cob, dirt, Badly 



A ' broken 

 kernels. 



Per cent. 

 0.2 



.1 



.3 



Per cent. 

 2.5 



3.5 



3.1 



12.1 



It will be seen by reference to Table III that the average moisture 

 content of the corn in lot No. 1 was 22 per cent; lot No. 2, 19 per 

 cent ; lot No. 3, 17 per cent ; and lot No. 4, 13.3 per cent — a range of 

 8.7 per cent. Special attention is also called to the low weight per 

 bushel of the corn from lot No. 1, containing 22 per cent of moisture, 

 and the high percentage of the badly broken corn in lot No. 4. Much 

 of this broken corn was of the consistency of coarse flour or meal. 



SHRINKAGE IN THE WEIGHT OP THE CORN. 



The quantity of corn placed in each car, the shrinkage in weight 

 while in the cars from December 24, 1910, to January 20, 1911, to- 

 gether with the average temperature of the corn in each car at the time 

 of loading and unloading, are shown in Table IV. These same data 

 are presented diagrammatically in figure 3. In addition to the natural 

 shrinkage in weight and the other data given in Table IV, figure 3 

 also shows the mean daily temperature of the air through which the 

 cars passed while en route from Baltimore to Chicago and return, 

 together with the average temperature of the corn in each car, as 

 compared with like observations made on the corresponding lots of 

 corn held on the track in the railroad yards at Baltimore. 



