"Its method is as perfect a one as we have," answered Captain Dillingham, "and up to date nothing better has been found. Those handling large quantities of cotton are almighty thankful to have anything as good, I can tell you. In India, China, and oriental countries, though, where the lots are small the people, as I say, still cling to their primitive foot gins. Here in America we have several types of gin all made on the same general principle but differing slightly as to detail. Some of these are better than others. By this I mean some are less brutal and cause a smaller degree of waste. Indeed I believe Whitney's own gin and those of its kind known as saw gins are considered to do the most damage to the fiber. This sort of gin consists of a series of circular saws set into a revolving shaft in such a way that the cotton fed into the machine is separated from its seeds in an incredibly short space of time. Afterward a whirling brush cleans the saws of the fiber clinging to them. It is an effectual system but a merciless one and is best adapted to short staple cotton which is strong and does not snarl. The best gins use only long, smooth blades to clear the cotton and it follows that these do the fiber far less injury." "How does a ginning factory look, Uncle Frederick?" Carl inquired. "You mean the inside? I never went through but one. I was waiting for a cargo at Norfolk once and as there happened to be a ginning plant near where I was staying I visited it. Generally peaking I suppose they are pretty much alike. The cotton is brought to them, as I said, in clearly marked, or branded bags or baskets, and is tossed from the wagons directly into hoppers. Afterward the contents of the hoppers is loaded into freight elevators and shot to one of the upper stories of the factory, there to be piled up and await its turn for ginning. "When the time comes to gin that particular batch it is heaped into a hopper and borne to the gins below by means of traveling racks." "How many gins are there to a factory?" questioned Mary. "That depends on the size of the factory and the amount of work brought there to be done," was the reply. "A fair-sized factory in a busy district will have half-a-dozen gins or more; and when you know that one gin will clean from three hundred to three hundred and fifty pounds of cotton an hour you will see that it will take a pretty big supply to keep such a lot of machinery moving. There is a separate hopper for each gin and if the supply fed into it comes too fast it can be stopped and switched to other gins. Once in the clutch of the relentless knives the cotton is shredded apart and the seeds drop out and fall into a traveling basket. From this basket they are forced through a tube to an oil mill which usually stands in another part of the grounds."