Scientific American Popular Science Supplement, No. 481, March 21, 1885, is a collection of interesting and important scientific articles that appeared in the 1885 edition of Scientific American. This appendix is an important source of knowledge about the scientific achievements of the time, allowing readers to better understand the development of technology, medicine and natural sciences in the 19th century. The authors of the articles are various specialists and scientists who share their research and discoveries with a wide audience. This book will be an important source of information for anyone interested in the history of science and technology.