Scientific American, Vol. 40, No. 15 (April 1879)

1879 · 12 pictures

Patents · Celluloid · Iron · Cylinder · Patented · Scientific American · Emery · Postage stamps · Inch pipe · Trade catalogs · Emery wheel · Common sense · Watering trough · Sponge staff · Address munn · American supplement

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