A short magazine article describing James Lyall's positive-motion power loom, in which the shuttle is carried through the shed on a roller-equipped carriage running on an iron raceway rather than being thrown freely. The text explains the problems of the thrown shuttle, how the carriage and rollers avoid friction on the warp threads, and the claimed benefits: controlled shuttle speed, very wide fabrics (a six-yard-wide loom is mentioned), less warp strain and a firm selvage. Three engraved figures show the loom, the shuttle and carriage, and an enlarged view of the shed.