Scientific American, Vol. 32, No. 20 (May 1875)

1875 · 16 pictures

Patents · Iron · Water · Boiler · Inches · Practical treatise · Valve · Second hand · Scientific American · Steam gage · Valve stem · Fly wheel · Sulphuric acid · Water level · York city · Postage included

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