The Principles of Pharmacognosy: An Introduction to the Study of the Crude Substances of the Vegetable Kingdom is a comprehensive book written by Friedrich August Fluckiger in 1887. The book provides an in-depth introduction to the study of the natural substances derived from plants that are used in medicine, also known as pharmacognosy. Fluckiger covers a range of topics related to pharmacognosy, including the identification, extraction, and analysis of plant-based drugs. He also delves into the chemical properties and therapeutic uses of these substances. The book is organized into chapters that cover different aspects of pharmacognosy, such as the morphology and anatomy of plants, the chemical composition of plant-based drugs, and the methods used to extract and prepare them for use in medicine.The Principles of Pharmacognosy is a valuable resource for students, researchers, and practitioners in the field of pharmacognosy. It provides a comprehensive overview of the subject matter and is written in a clear and concise style that is easy to understand. The book is also illustrated with detailed diagrams and photographs, which help to clarify the concepts discussed in the text. Overall, The Principles of Pharmacognosy is an essential reference for anyone interested in the study of natural substances derived from plants and their therapeutic uses.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.