The book "Scientific American Popular Science Supplement, No. 446, July 19, 1884" is a collection of interesting and relevant articles from various fields of science, presented by the Scientific American publishing house. In this issue you will find the latest scientific discoveries, research and ideas that were relevant in the middle of the 19th century highlighted. The authors of these articles are various scientists and experts in their fields, which makes their statements authoritative and interesting for readers interested in science and technology. "Scientific American Popular Science Supplement, No. 446, July 19, 1884" is an excellent choice for anyone interested in the history of science and scientific discovery.