Scientific American, Vol. 32, No. 17 (April 1875)

1875 · 17 pictures

Patents · Center · Colors · Consists · Improved · Rapid transit · Emery · British patent · White light · Working men · Double convex · Scientific American · Centrifugal force · Union iron · Sewing machine · Sir goldsworthy

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