The Dyer's Guide Being a compendium of the art of dyeing linen, cotton, silk, wool, muslin, dresses, furniture, &c. &c.; with the method of scouring wool, bleaching cotton, &c., and directions for ungumming silk, and for whitening and sulphuring silk and wool; and also an introductory epitome of the leading facts in chemistry, as connected with the art of dyeing

"The Dyer's Guide" by Thomas Packer is a detailed handbook from the 1800s that teaches people how to dye different fabrics like cotton, linen, silk, and wool. It's like a classroom in a book that teaches about different ways to dye, talking about the best ways to prepare materials, mix colors, and make the dye last. The book does not only show you what to do, it explains the chemistry behind dyeing, offering insights into how different ingredients affect the final color and quality. Packer wanted to help dyers improve their skills and understand the science for better dyeing.