''A Nomenclature of Colors for Naturalists and Compendium of Useful Knowledge for Ornithologists'' is a book written by Robert Ridgway in 1885. The book is a guide for naturalists and ornithologists that provides a comprehensive list of colors and their corresponding names. The colors are described in detail, including their hue, brightness, and saturation, making it easier for naturalists and ornithologists to identify and classify birds and other animals. The book also includes a compendium of useful knowledge for ornithologists, such as information on bird anatomy, behavior, and habitat. This book is considered an important reference for scientists and nature enthusiasts, and it continues to be used today.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.