- 6 - 
fatty acids in tho oil, one lot containing 13.1 percent of free fatty 
acids and averaging 4.14 percent, resulting in an average reduction in 
the quality indexes of the 7 lots of 11,70 units for this cause; 143 
lots contained more than 12 percent moisture, the highest moisture 
content being 20.4 percent, and the quality indexes of these 143 lots 
being reduced an average of 2,77 units "because of excesses of moisture; 
3 lots contained more than 3 percent foreign matter; the foreign 
matter content in one of these lots being 11,2 percent, and the average 
reduction in the quality indexes of the 3 lots, because of foreign 
matter, being 3,50 units. It is ovident that the quality indexes of 
at least 5 of the 148 lots were reduced for two or more causes. 
Out of the 305 lots that wore sampled and graded, 7 were classi- 
fied as of Superior Quality, The range of the 'grades was from 48 to 
110, and the average of the grades was 96,6, 
The number of lots of cottonseed that were sampled, analyzed, 
and graded increased materially as soon as the Department of Agri- 
culture undertook the supervision of the sampling and grading. In 
Arkansas (table l) the number' of lots that were sampled and graded rose 
from 10,093 in the season of 1934-35 to 15,748 in 1937-38, In Louisi- 
ana, tho number was 2,220 in the season of 1934-35 and 8,577 in the 
season of 1937-38 (table 2), In Mississippi, 12,760 lots were sampled 
and graded during the season of 1934-35, contrasted with 36,445 lots 
during the 1 season of 1937-38 (table 3), In Tennessee 5,477 lots were 
graded during the season of 1934-35 contrasted with 7,105 lots during 
the season of 1937-38 (table 4), 
SUMMARIZING STATEMENT: 
Both the ranges and the averages for oil and ammonia contents of 
cottonseed varied from month to month and from season to season in each 
of the States included in this study as shown in text and. tables. 
These variations resulted in variations in recoverable oil of more than 
250 pounds and in cake (of 41.13 percent protein) of more than 500 
pounds por ton of seed processed. 
The reduction in tho quality index of the various lots of cotton- 
seed sold on the basis of grade during the season of 1936-37 was great- 
est in Tennessee and least in Louisiana; in contrast with the season of 
1937.-38, when it was greatest in Louisiana and least in Tennessee. 
In Tennessee and Arkansas, the grade of cottonseed is lowered 
most frequently because of excesses of moisture and foreign matter; 
whereas in Louisiana and Mississippi and in Southeastern Arkansas, the 
greatest reductions in grade are caused by excesses of free fatty acids 
in the oil in the seed. 
The tables giving the distributions of the grades show that the 
grades of cottonseed produced become progressively lower as the season 
