EN
The article discusses the history, layout, structure and contents of 'Pamietnik Warszawski' (Warsaw Diary) from the years 1809-1810. The periodical's structure is demonstrated to have similarities to its earlier editions dating back to 1801-1805. The instability and inconsistencies of its structure are shown to be a problem for a researcher. The article also provides a chronological overview of the periodical's sections and contents as well as demonstrates their relevance to various projects undertaken by the Society of Friends of Sciences.