""Notes Upon Indigo"" is a book written by John Lord Hayes in 1878. The book is a comprehensive guide to the history, cultivation, and production of indigo, a plant that has been used for centuries to create a blue dye. Hayes provides a detailed account of the various species of indigo, their characteristics, and the regions in which they are grown. He also explains the chemical process by which the dye is extracted from the plant and how it is used in textile production. The book includes numerous illustrations and diagrams to aid in understanding the complex process of indigo production. Additionally, Hayes discusses the economic and cultural significance of indigo throughout history, including its role in the American Revolution and the impact of its production on the economies of various countries. Overall, ""Notes Upon Indigo"" is a valuable resource for anyone interested in the history and science of dye production.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.