The article discusses the history of formation of outer Russian legislation in domestic justice in the second quarter of the 19th century - a section in legal science, which studies the legalization of the sources of law in the retrospective projection. The impetus for the creation of this trend in the Russian law was the systematization of legislation, the publication of The Code of Laws of the Russian Empire, and the development of legal education. Due to rapid development of legal science in Russia, the question of sources of knowledge of law becomes the subject of research and teaching; and it results in the establishment of the sources of law as a section of legal science. M.M.Speransky raised this question and marked the importance of studying law as a reflection of the political and legal development of Russia. K.A.Nevolin,Professor of Kiev University, allocated the outside part of law as section of encyclopedia of law, and founded the basis for historical knowledge of sources of law and their values in the periodization of the history of Russian law. Professors N.F.Rozhdestvensky and I.D.Belyaev continued study of the sources of law, and justified the selection of the external history of legislation as special section of the historical and legal science. In the second half of 19th – early 20th centuries, the legal chronology was rooted in Russian legal science as its part, which provided study of sources of law and the history of legislation.
Keywords: History of State and Law of Russia, source, sources of law, sources of knowledge of law, external history of legislation.