The book "Appletons' Popular Science Monthly, March 1900, Volume 56: November 1899 to April 1900" is a publication that brings together a number of interesting articles from various branches of science. This volume contains many interesting materials that open the fascinating world of science and research to the reader. From physics to biology, from astronomy to chemistry - each article adds freshness and a new perspective on the world around us. Famous authors and specialists share their knowledge and research, making science accessible to the general public. "Appletons' Popular Science Monthly" is not only a source of new information, but also a window into the world of science, which provides an opportunity to better understand the world around us.