Volume 87 of the I. C. S. Reference Library, a 1906 textbook for correspondence students on cotton and cotton-yarn preparation. It begins with cotton cultivation, fiber structure, the cottons of the world, ginning, baling and marketing. It then covers the machines that turn raw cotton into roving: pickers, cards (construction, clothing, grinding, setting), drawing rolls, railway heads and drawing frames, combers, and fly frames. Each section has numbered paragraphs, many line drawings of machine mechanisms, tables, examination questions with answers, and an index.