Departments

• Departments

  Mutually Profitable

• Development of Color-Photography

• Congress and the Pneumatic Dispatch System in this City

• The American Trotter Abroad

• Preliminary Hearing of the President's Canal Commission

• Paris Exposition Notes

• Death of Jonas Gilman Clark

• The Japanese Grasses

• Portable Shields for Infantry

• Single-Rail Storage Battery Motor

• The Assaying of Gold and Silver Ores

• Wood Mosaic

• Cotton Trade Schools in the South

• A New Form of Car Fender

• The Paris Exposition

• Electric Cab System of Paris

• Dr. Pupin's Improvements in Long-Distance Telephony

• The Store-Room Beetle or Book Worm

• Notes and Queries

• Business and Personal

• Recently Patented Inventions

• Index of Inventions

• To Inventors

• Patents