Scientific American, Vol. 20, No. 16 (April 1869)

1869 · 7 pictures

Patents · Machine · Copper · Iron · Beet · Beet root · Powder · Patent office · Turbine water · Root sugar · Solar oil · Antedated march · Sewing machine · Latent heat · Steam engine · Steam boiler

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