Scientific American, Vol. 23, No. 7 (August 1870)

1870 · 8 pictures

Patents · Magnetic · Consists · Diamagnetic · Iron · Patent office · Friction · Antedated july · Wrought iron · Heavy glass · Cotton seed · Magnetic action · Best design · Dated march · Large number · Turbine water

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