CUSTOM GINNING IN COTTON-SEED DETERIORATION. 5 
the ginning of a single bale. Most of the red seeds passed out of 
the roll box during the first few minutes the gin was in operation. 
It is possible that if it had not been necessary to remove the roll 
Fig. 3. — Sample of cotton seed taken 15 minutes after the ginning of the second bale had begun, showing 
7.4 per cent of red seed from the stained roll of the first bale. - 
to stain it (that is, if a stained roll could have been formed in the 
normal way) mixing might have been apparent through a longer 
period of time; but it is reasonable to believe that the results obtained 
would not have been modified materially. 
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y IG . 4. — Sample of cotton seed taken 20 minutes after the ginning of the second bale had begun, showing 
2.8 per cent of red seed from the stained roll of the first bale. 
These results were obtained from only one gin. It is evident 
that in a battery of four or more gins the chance of mixing seed 
is greatly increased. However, taking these results as a basis, 
rather dependable calculations can be made for the purpose of 
