Excerpt from The Natural Organic Colouring Matters Though there is no rule by which the existence of a dye in this or that portion of a plant can be predicted with any certainty, the colouring matter in general is most prolific in the leaf or flower, and absent in most cases from the fruit, stem, bark, and root. On the other hand, when present in the latter, these are usually rich in colouring matter, as is the case with Persian berries, the dyewoods. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.