18 BULLETIN 48, U. S. DEPARTMENT OF AGRICULTURE. 
TABLE IX,—Z'otal amount of corn contained in each experiment, the average 
moisture content of the corn at the beginning of the experiment, and the 
average temperature of the corn immediately after loading and just prior to 
unloading. 
ah Average tem- 
transit Folduen ee eee | perature of corn 
ori E21 ape ici ‘ Net corn % when— 
sas Period covered by | Balti- Balti- Moisture | in ears 
No H experiment. more to ne content. after 
: Chicago rare loading. U 
and |-° a Pounds. | Percent. |Loaded.| , ae 
return. oaded. 
Per cent. | Pounds. sae a Oe 
re ee oe tO Miaiy; ol) | SONCATS =| =e cr = i8.1 334, 270 ~ 3, 360 | 1.01 55.0 85.2 
Acer cp Se Dec. 24, 1910, to Jan. |f4 ecars.|....---- 17.9 | 258,350 460 | .18 Bile 30.0 
7) i be) pen pete | Vee ate 4 cars. 17.9 258, 200 520 . 20 Slno 33.9 
Babe Mar. 2 to Mar. 29, |f4 ears.|......-- 18.3 257, 320 780 - 30 40.2 58.9 
Of See Ge eee ete | | ea 4 cars. 18.3 256, 540 775 SRY) 40.6 58.3 
tae May 11 to June 1-3, |f4 cars.|......-- 16.7 261,710 | - 1,320 - 50 60.7 90.6 
5 ESP A Dee et EN ct Mi 4 cars. 16.7 257, 350 1,870 73 61.6) 99.6 
| 
=—_ A ors 
In all of the experiments, with the exception of the first, four cars 
of corn differing in moisture content were shipped from Baltimore 
to Chicago and return and four duplicate cars of the same kind of 
corn were held on the track at Baltimore. 
Tt will be seen in Table IX and figure 6 that the average loss in 
weight of the four cars of corn in transit from Baltimore to Chi- 
cago and return in the second experiment, begun December 24, 1910, 
was 0.18 of 1 per cent. The four duplicate cars held at Baltimore 
showed an average shrinkage of 0.20 of 1 per cent. In figure 6 it 
will be noticed that the average temperature of the corn in the eight 
cars at the time of loading was 31.5° F. At the time of unleading 
there was a difference in temperature between the corn in transit and 
that on the track of 3.9 degrees, the temperature of the corn in 
transit having decreased 1.5 degrees, while that of the corn on the 
track had increased 2.4 degrees. This was caused by the lower air 
temperatures in transit than at Baltimore, as shown in figure 38, 
page 9. 
In the third experiment, begun March 2, 1911, the losses were the 
same on the corn in transit as on the corn at Baltimore, being 0.3 
of 1 per cent. In this experiment the average temperature of all the 
corn was 40° F., or 84 degrees higher than the corn used in the 
second experiment. The average increase in the temperature of the 
corn in transit from the time of loading until it was unloaded was 18.7 
degrees. The average increase in the temperature of the corn on the 
track was 18.3 degrees. By consulting figure 4 it will be seen that 
the air temperature surrounding the corn in transit was practically 
the same as the air temperature surrounding the corn at Baltimore. 
In both cases the tendency was toward a higher air temperature; 
consequently, the temperature of:the corn in transit increased uni- 
formly with the temperature of the corn at Baltimore. 
