The book "Popular science supplement to Scientific American magazine, No. 455, September 20, 1884" is a valuable document that preserves important scientific discoveries and researches of the 19th century. In this publication you will find information about the latest achievements in the field of science and technology, descriptions of inventions and discoveries of the leading scientists of that time. Thanks to this book, you can better understand the development of world science and technology at the end of the 19th century. "Popular Science Supplement to Scientific American Magazine, No. 455, September 20, 1884" is an indispensable source of knowledge for anyone interested in the history of science and technology.