Encyclopaedia Britannica, 11th edition, volume 16, chapter 8, devoted to the study of "Logarithms" to "Lord Advocate", is a huge reference on a variety of topics. This part of the publication contains a large amount of interesting and important information, covering both scientific concepts and historical facts. "Logarithm" is a mathematical concept that has found its application in many fields of science and technology. The book explains in detail the principles of logarithms, their properties and methods of use. This chapter can be useful both for professionals and for a wide range of readers interested in mathematics. The "Lord Advocate" is a position in the Scottish legal system that is important in law enforcement and the legal system of Great Britain. This publication details the role of the Lord Advocate, his powers and responsibilities. The total amount of information presented in this part of the Encyclopaedia Britannica indicates the importance and authority of this publication as a source of knowledge in various fields of knowledge.