An encyclopedia entry on weld (Reseda luteola), the plant used by dyers for yellow. It gives dyeing methods for wool, silk and cotton, including alum and tartar mordant proportions, and a process for making weld yellow pigment for paper-stainers. A longer agricultural section covers soils, sowing, hoeing, pulling, drying, blight, and sale of the crop to dyers and calico-printers.