Read it through once

Cotton-seed was comparatively valueless in my time; but it is worth $12 or $13 a ton now, and none of it is thrown away. The oil made from it is colorless, tasteless, and almost if not entirely odorless. It is claimed that it can, by proper manipulation, be made to resemble and perform the office of any and all oils, and be produced at a cheaper rate than the cheapest of the originals. Sagacious people shipped it to Italy, doctored it, labeled it, and brought it back as olive oil. This trade grew to be so formidable that Italy was obliged to put a prohibitory impost upon it to keep it from working serious injury to her oil industry.