"Scientific American Supplement, No. 643, April 28, 1888" is a publication dedicated to the important achievements and discoveries of science and technology at the end of the 19th century. This number contains interesting and relevant information about new inventions, scientific research and discoveries made in various fields of knowledge. Authors explore topics related to physics, chemistry, biology, technology, and many other aspects of science. With the help of scientific articles and illustrations, readers can better understand the essence of discoveries and their practical application. "Scientific American Supplement" becomes an inexhaustible source of interesting and useful information for everyone interested in science and technology.