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of handling it are identical. It is shoveled into large spiral screw 

 conveyors, which in some cases have solid and in other cases perfo- 

 rated-screen bottoms. These conveyors discharge directly into the 

 elevator cups, which in turn deposit the seed in another spiral screw 

 conveyor. This brings the seed to the cleaning apparatus, known as a 

 "boll reel." This is a perforated cylinder, revolving within a closed 

 box. The perforations of the cylinder are larger than the seeds, 

 allowing them to fall through into the closed box below, while retain- 

 ing larger substances, consisting of bolls, carpels, pieces of cotton 

 stalks, and sweepings, and the general trash from the ginneries. This 

 trash is usually picked over by hand and such portion as may be of 

 value is placed with the seed to pass through the linters. The balance 

 of the trash is deposited in various ways about the building or outside. 

 From the boll reel the seed is conveyed to a sand reel, which consists 

 of a revolving steel cylinder, having perforations smaller than the 

 cotton seed. Up to this point in the handling of seed at the mills, 

 except in those cases where the conveyor has a perforated lining and 

 supplementary screw conveyor for the trash, there are no devices that 

 would have a tendency to eliminate the weevils. However, the sand 

 reel permits boll weevils and other trash — in fact, everything smaller 

 than the seeds — to pass to the chamber below, from which it is usually 

 removed by hand and scattered outside of the buildings. It is very evi- 

 dent, therefore, that this is one point where the weevils are given an 

 opportunity to spread from the oil mills. Nevertheless, excellent oppor- 

 tunity for the destruction of the weevils that have come from the gins 

 is given at this point. This could be accomplished easily by collecting 

 the refuse from the sand reel by means of a spiral conveyer, and pass- 

 ing it between such compression rollers as have been described previ- 

 ously. It is evident that all boll weevils remaining in the seed after 

 it has passed through the sand reel must be carried with the clean 

 seed through air-tight pipes into the seed hopper, which drops them 

 upon the saws of the linter. Should any of the weevils escape the 

 action of the sand reel they would certainly be killed by the close 

 action of the saws of the linter. 



Another very important point to be considered is in connection with 

 the carriage of the seed to the oil mill proper. As has been stated, the 

 conveyor runs the full length of the storage house on the outside of 

 the building. In cases where a perforated bottom is provided, the 

 refuse smaller than cotton seed passing through the bottom, which 

 may include many weevils, is simply allowed to fall upon the ground. 

 In other cases, however, this residue is collected by a spiral screw 

 conveyor, to which compression rollers for the destruction of the 

 weevil could be easily attached. If the screw conve3'or were provided 

 with an unperforated lining at the bottom, it would carry all weevils 



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