The book "Molecular Tactics of the Crystal" by the famous author William Thomson, Baron Kelvin, is an important scientific work in the field of physics. In this book, the author investigates the properties of crystalline substances at the molecular level, having analyzed their structure and the interaction of molecules. Using in-depth analysis and high scientific standards, the author reveals the complex processes that occur in crystals and provides readers with new insights into the physical phenomena of these materials. The book "Molecular Tactics of the Crystal" is a must for anyone interested in the structure and properties of crystalline substances.