The book "Principles of Public Health: A Simple Textbook of Hygiene, Teaching the Basic Principles Necessary to Maintain the Health of the Individual and the Community" was written by Thomas Dyer Tuttle. In this book, the author examines key aspects of health that are important both for an individual and for society as a whole. In particular, the principles of hygiene, which are the basis of ensuring a healthy lifestyle, preventing diseases and improving the quality of life, are studied. The author reveals important aspects of maintaining health both as an individual and as a part of the community, emphasizing the importance of preventive measures and a responsible attitude to one's health. This book will be a useful source of information for anyone who is interested in health and wants to learn more about the basic principles of public health.