44 BULLETIN 764, U. S. DEPARTMENT OF AGRICULTURE. 
In fermenting corn, the r oisture contained within the kernels is 
liberated quite rapidly, and escapes in the form of vapor. After the 
cargo arrived in Aalborg, the hot corn under the hatch in hold 2 was 
discharged to a depth of about 8 feet, and then the hatch closed 
again. While the hatch was open, there was no “‘sweat’’ dropping 
from the hatch beams because the heated moisture-laden air escaped 
through ventilation, but, a short time after the hatch had been 
closed the water was found to be dripping from the deck and hatch 
beams quite rapidly, which stopped again after the hatch had been 
opened a few minutes. During the voyage all of the ventilators 
leading to the corn were kept closed. 
CORRELATION OF THE CHANGES IN THE TEMPERATURE OF THE CORN AND THE 
CHANGES IN SOUND KERNELS, ACIDITY, GERMINATION, AND TEST WEIGHT PER 
BUSHEL. 
Tt was seen in the tables giving the detailed analyses of the samples 
that considerable change took place in the temperature and con- 
dition of the corn in 
the various positions 
20 & of stowage while the 
=e corn was in the vessel. 
7570 99 SAE eee? ; ; 
/O0ro12. aan The increase in the 
25 ro /. -rmrmrerwenemmmmrrrmms 32; | temperature of the 
i 
ee eee 
vesselis brought about 
principally through 
(1) inherent causes, 
usually fermentation, 
which produces heat, 
and (2) external in- 
fluences, such ashigher 
air and sea-water 
temperatures and the 
heat from the ship’s 
machinery, which 
| penetrates the cargo 
————= 527 holds and frequently 
ESS = Sa induces fermentation. 
soz | As the corn in bulk 
48.0 does not afford suff- 
=== - GONDITION OF THE GORN AS LOADED cient ventilation for 
EMME - CONDITION OF THE CORN AS DISCHARGED 
the heat to escape, 
m oO a - = eS = aie os = 2 base: aE 5 
Fig. 28.— Diagram showing the correlation of the temperature and 
peehcan of the corn samples in crossed-wire containers as loaded the temperature con- 
and as discharged. (Cargo No. 2.) tinues +o increase un- 
til the corn gets hot. The maximum temperature recorded in this 
cargo as discharged was 155° F. 
SOTO 7% 
AVERAGE WEIGHT PER BUSHEL-LBS 
PANGE IN THE TEMPERATURE OF THE CORN AS DISCHARGED~ °F 
(AVERAGE TEMPERATURE OF THE GORN AS LOADED 59 f- RANGE 5110 7% °F) 
