​”Essential Oils: Their Properties, Identification, and Analysis” by Rupert Granville Gates, first published in 1920, is a comprehensive exploration of essential oils, their chemical compositions, and methods for their identification and analysis. Gates delves into the intricate world of essential oils, emphasizing their significance in various fields, including medicine, perfumery, and aromatherapy. The book provides detailed insights into the properties of essential oils, discussing their therapeutic benefits and the scientific principles underlying their effects.​

One of the key aspects of the book is its focus on the chemical composition of essential oils. Gates examines the various compounds present in essential oils, such as terpenes, phenols, esters, and aldehydes, and their roles in determining the oils’ properties. He also discusses the methods used to extract and analyze these oils, highlighting techniques like distillation and chromatography. This scientific approach provides readers with a deeper understanding of how the chemical makeup of essential oils influences their aroma and therapeutic effects.​

Furthermore, the book addresses the identification and analysis of essential oils, offering practical guidance on distinguishing between different oils and assessing their quality. Gates outlines various analytical methods, including organoleptic evaluation and chemical analysis, to accurately identify essential oils. This information is particularly valuable for practitioners and researchers in the field, as it aids in ensuring the authenticity and efficacy of essential oils used in various applications.​

Gates’ work serves as a foundational text for those interested in the study and application of essential oils. Its detailed examination of the chemical properties and analytical techniques provides readers with a thorough understanding of essential oils, bridging the gap between traditional knowledge and modern scientific inquiry. The book’s enduring relevance underscores its importance in the field of essential oil research and application.