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About the Second Edition of the Proto-Slavic Grammar by G. A. Ilyinsky

The article describes the discovery of the manuscript of the second edition of the Proto-Slavic Grammar by G. A. Ilyinsky, which was not published due to the approval of the “new doctrine on language” by N. Ya. Marr in the Soviet linguistics of the 1930s. The manuscript of the second edition, which had been considered lost, was kept at the N. Y. Marr Institute of Language and Thought (now the Institute of Linguistic Research of the Russian Academy of Sciences). It is located in St. Pe-tersburg. Department of the Archive of the Russian Academy of Sciences (f. 77. Inventory 7. d. 61–64) and is a handwritten copy of the text of the Proto-Slavic grammar by the wife of the scientist A. Ya. Ilyinskaya (without the first 224 sheets of the Introduction, which are stored separately). The total volume of the manuscript is 1596 sheets. The article briefly describes the composition of Ilyinsky’s work, especially noting the differences between the second, significantly expanded edition, and the first, including a significant replenishment of scientific works considered in each chapter, a review of the achievements in the study of the Proto-Slavic language in the 1920s; a significant expansion of the research material, including an increased number of Indo-European languages used for comparison; the author's revision of some of the conclusions set out in the first edition. The appendix contains a fragment of Chapter VI “Lexical interaction of the Proto-Slavic language with other neighboring languages”.