Scientific American, Vol. 30, No. 19 (May 1874)

1874 · 11 pictures

Patents · Iron · Inches · Improved · Cast Iron · Center · Cent potential · Agricultural machinery · Scientific American · National academy · Sewing machine · Gutta percha · Solar attraction · Vander weyde · Ventral segments

Internet Archive · Public domain (published before 1931) · More from this library