Scientific American Magazine

Newark Bay Draw Bridge

The Protection of Shade Trees Against Insects

Present Condition of Shipping and Sailors

Rounding Jack for Hat Brims

Improved Oar Lock

Improved Printer's Chase

Improved Car Coupling

Improved Combination Lock

The Momentum of Liquids

Combined Fertilizer Dropper and Hill Former for Tobacco Plants

Animal Poke

Water Motor

Improved Steam Road Roller

Attraction Produced by Jets of Steam or Air

The Two Headed Cow

Autographs of the Electric Spark

Miscellaneous Inventions - May 28, 1887

Engineering Inventions - May 28, 1887

To Inventors - May 28, 1887

Correspondence - May 28, 1887

New Books and Publications - May 28, 1887

Business and Personal - May 28, 1887

Notes and Queries - May 28, 1887

Index of Inventions - May 28, 1887