The book "Notes and Queries, Index Volume 4, July-December 1851. A means of communication for men of letters, artists, antiquarians, genealogists and others" is a valuable resource that combines a wide range of knowledge and information from various fields. This index collects and systematizes materials included in the fourth volume of the 1851 edition. The entries in this book are an important interactive channel of communication for literary figures, artists, lovers of archeology, genealogy and other specialists in the field of culture and science. The work is edited by different authors, which makes this book extremely multifaceted and interesting for the reader who seeks to expand his knowledge and exchange ideas with like-minded individuals.