Departments

• Departments

  An Improvement in Radiography

• Fire-Proof Docks--The Moral of a Great Calamity

• Curious Chemical Compound

• Paris Exposition Notes

• Twentieth Century Energy

• A Novel Nail Forming Machine

• Electroengraving

• An Automatic Coupling for Air-Brakes

• The Burning of the North German Lloyd Steamships and Docks, Hoboken, N. J.

• The Manufacture of Guns and Armor at the Bethlehem Steel Works

• A Compensation Tie-Plate

• A California Cycleway

• New Books, Etc. - July 14, 1900

• Recently Patented Inventions - July 14, 1900

• Business and Personal - July 14, 1900

• To Inventors - July 14, 1900

• Index of Inventions - July 14, 1900

• Notes and Queries

• Patents - July 14, 1900