"Scientific American Supplement, No. 433, dated April 19, 1884" is a valuable publication that contains the most current information from various fields of science and technology of the 19th century. In this issue, readers will find interesting articles about new inventions, scientific discoveries and research in the fields of physics, chemistry, biology and many other fields of knowledge. The authors are diverse - from scientists to engineers, which makes this publication quite diverse and exciting for any seeker of new knowledge. Scientific American Supplement, no. 433, April 19, 1884 - an ideal choice for anyone interested in the history of the development of science and technology."