10 



BULLETIN 48, U. S. DEPARTMENT OF AGEICULTUEE. 



THIRD EXPERIMENT, MARCH 2 TO MARCH 29, 1911. 



CORN LOADED INTO CARS. 



On March 2. 1911, four lots of corn were selected and two cars 

 were loaded from each of the four lots. This corn was selected and 

 handled in the same manner as that in the second and fourth experi- 

 ments, one car from each lot of corn being held on the track at Balti- 

 more, while the duplicate car from each lot was forwarded to Chi- 

 cago and returned to Baltimore via the Pennsylvania Railroad. The 

 eight cars were equipped with electrical resistance thermometers as 

 in the two preceding experiments. 



The average condition and quality of the corn in each lot at the be- 

 ginning of the experiment, as represented by the results of the analy- 

 ses of samples taken when the corn was being loaded after it had 

 been thoroughly mixed in the elevator, are shown in Table V. 



Table V 



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

 third experiment when loaded into cars on March 2, 1911. 



Lot 



Xo. 



l 



2 



3 

 4 



Car designation and movement. 



Moisture 

 content. 



Sound 



corn. 



per 

 bushel. 



Cob, dirt, 

 etc. 



Badly 

 broken 

 kernels. 



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



•j turn 



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

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



< turn. 



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

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



i turn 



|C'ar 3-B, held on track in Baltimore j r ards. . . 

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



< turn 



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



Per cent. 

 21.6 



19.9 



17.4 



14.1 



Per cent. 

 94.8 



95.1 



97.0 



98.0 



Pounds. 

 51.9 



53.3 



55.9 



56.5 



Per cent. 

 0.2 



.2 



.2 



1.0 



Per cent. 

 4.0 



3.6 



4.2 



17.2 



From Table V it will be seen that the average moisture content of 

 the corn in lot No. 1 was 21.6 per cent; lot No. 2, 19.9 per cent; lot 

 No. 3, 17.4 per cent; and lot No. 4, 14.1 per cent. The percentage 

 of sound corn ranged from 94.8 per cent in lot No. 1 to 98 per cent 

 in lot No. 4. 



SHRINKAGE IN THE WEIGHT OF THE CORN. 



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

 while in the cars from March 2 to March 29, 1911, and the average 

 temperature of the corn in each car at the time of loading and 

 unloading are given in Table VI. These same factors, together with 

 the daily mean temperature of the air through which the cars passed 

 in transit from Baltimore to Chicago and return, and the daily 

 average temperature of the corn in each of these cars, as compared 

 with like records made in connection with the cars held on the track 

 in the Pennsylvania Railroad yards, at Baltimore, are shown in 

 figure 4. 



