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The Production of Slate

Our Foreign Trade for the Last Fiscal Year

Postage and the Export Trade

The Factor of Safety in Yacht Construction

A National Park in the East

Science Notes

Some Soda Water Fountain Statistics

Improvements in Our Tobacco

A New Miner's Drill

The "Polyphone"--Attachment for Phonographs

The Crankshafts of the Liner "Deutschland"

An Electric Brougham

The Boxing Kangaroo

Fuel Gas

By C. Francis Jenkins

Tree Dwelling in California

"Columbia" and "Shamrock"--A Comparison


  • Letters

    Correspondence - August 12, 1899

  • Departments

    Index of Inventions - August 12, 1899

  • Notes and Queries - August 12, 1899

  • Business and Personal - August 12, 1899

  • Recently Patented Inventions - August 12, 1899

  • Patents - August 12, 1899

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