The book "Arena. Volume 4, No. 19, June 1891" is a publication dated to the summer of 1891. In this issue, readers will find a variety of interesting articles from different fields of knowledge, such as literature, science, history and culture. The Arena publication has always been famous for its objectivity and selection of interesting material for readers. The authors of the articles presented in this issue are known for their competence and professionalism in their field. Each article offers its own perspective on current issues of the time. "Arena. Volume 4, No. 19, June 1891" is an excellent example of a publication that combines science, history, and literature of that time.