"Popular science supplement to Scientific American magazine, No. 613, October 1, 1887" offers readers a unique opportunity to familiarize themselves with current scientific discoveries, events and information. In this issue, contributors cover a variety of topics, from advances in technology and medicine to the study of nature and astronomy. Thanks to the in-depth analysis and accessible presentation of the material, readers will be able not only to expand their knowledge of various fields of science, but also to get great pleasure from studying this interesting and useful information. "Scientific American Supplement, #613, October 1, 1887" is an indispensable source of knowledge for anyone interested in modern science and technology.