SHRINKAGE OF SHELLED CORN IX CARS IN TRANSIT. 



13 



109.7°, while that of the corn in transit had increased to 11-2° F. The 

 high temperature accompanying the deterioration accounts for the 

 very large natural shrinkage occurring in these cars. 



The corn in the other six cars remained at practically the same 

 temperature throughout the experiment, showing only a slight in- 

 crease from the time of loading until the time of unloading. This 

 slight increase in temperature was probably due to the fact that the 

 atmosphere was generally warmer during the latter part of the ex- 

 periment rather than to any increase in temperature resulting from 

 fermentation, as the corn was in good condition when unloaded. 



FOURTH EXPERIMENT, MAY 11 TO JUNE 1-3, 1911. 



CORN LOADED INTO CARS. 



On May 11, 1911, eight cars were loaded with corn, two cars each 

 from four special lots which had been selected according to moisture 

 content. Prior to loading into the cars, each lot was thoroughly 

 mixed in the elevator. One car of corn from each lot was held on the 

 track at Baltimore, while the duplicate car of each lot was forwarded 

 to Chicago and returned to Baltimore via the Pennsylvania Railroad. 

 The cars were equipped with electrical resistance thermometers, 

 which were located in the grain in the same manner as in the three 

 former experiments. 



The average condition and quality of the com in each lot at the 

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

 analyses of samples taken when the corn was being loaded, are shown 

 in Table VII. 



Table VII. — Factors showing the condition and quality of each lot of com in 

 the fourth experiment when loaded into cars on May 11, 1911. 



Lot 



No. 



Car designation and movement. 



Moisture 

 content. 



Sound 

 corn. 



Weight 



per 

 bushel. 



Cob, dirt, 

 etc. 



broken 

 kernels. 



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



•j turn 



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

 (Car 2-0, transit, Baltimore to Chicago and re- 



i turn. 



tCar 2-B, held on track in Baltimore yards. . . 

 (Car 3-0, transit, Baltimore to Chicago and re- 



i turn 



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

 (Car 4-C, transit, Baltimore to Chicago and re- 



•! turn 



|Car 4-B, held on track in Baltimore yards.. . 



Per cent. 

 \ 18.2 



1 „.. 



16.9 

 13.9 



Per cent. 

 89.9 



91.1 



Pounds. 

 54.0 



54.1 



55. 5 



56.2 



Per cent. 

 0.2 



.2 



.3 



Per cent. 

 3.0 



3.2 



4.-1 



22.1 



It will be seen by referring to Table VII that the average moisture 

 content of the corn in lot No. 1 was 18.2 per cent. The corn in this 

 lot was considerably lower in moisture than the corn in lot No. 1 

 of the second and third experiments. This was made necessary be- 

 cause it was almost impossible to obtain corn having a moisture con- 

 tent of more than 18 or 19 per cent that was sound and sweet at that 



