8 BULLETIN 288, U. S. DEPARTMENT OF AGRICULTURE. 
The construction of the gins is such that the roll can be dropped and the box cleaned 
in a very few minutes. Some improved gins are arranged so that the roll box may be 
emptied without stopping the gin, thereby further simplifying the operation. 
Having cleaned the machinery up to and including the roll box, the next step is to 
prevent the seed of the variety to be ginned from falling into the conveyor. It is 
impracticable to clean the conveyor satisfactorily, and therefore it should not be used 
when planting seed is to be obtained. By adjusting the position of the apron of each 
gin the seed can be made to fall upon the floor in front of the gin instead of into the 
conveyor. From here it can be sacked easily. 
The floors about the gins should be cleaned to the extent that no seeds are left lying 
around to cause mixing. Canvas spread upon the floor to receive the seed from the 
gins is often used. 
Such, precautions require time in which to carry them out effec- 
tively, and time spent in this manner naturally reduces somewhat 
the amount of ginning that otherwise could be done in a day. On 
this point the ginner may find cause to base objection to such proce- 
dure, but it should be possible to meet the objection by fully com- 
pensating him for the extra time consumed. The expense of special 
ginning in some sections may be reduced by arranging to have it done 
on specified days or at the close of the season, when more time is 
available. In any event, the amount of money that may be required 
to secure the ginner' s cooperation in the maintenance of pure seed is 
almost negligible in view of the favorable effect such precautions will 
have upon the farmer's crops in succeeding years. 
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WASHINGTON : GOVERNMENT PRINTING OFFICE I 1915 
