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Features

The Telemetrograph

On the Conversion of Heat into useful Work

Lecture III

By William Anderson

Preventing Collisions with Icebergs in a Fog

An Account of some Preliminary Experiments with Biram's Anemometers Attached to Kite Strings or Wires

The Hydrodynamic Researches of Professor Bjerknes

By Conrad W. Cooke

A New System of Telephonic Communication

The Blanchard Centennial

Full Way Valve

The Iron and Coal Districts of Alabama

Removal of a Light House

On Indicators

A Rocking Stand for the Developing Dish

The Recent Convention of Photographers at Buffalo, New York.—Exhibition of Photographic Novelties

Sulphite of Soda as a Fixing Agent

Fixing Coloring Matters upon Cotton by means of Tannin

By O. N. Witt

Preserving Timber

Melton, Winner of the Derby, 1885

The Microscope in Medicine

By C. H. Stowell

Shade and Shelter Trees

Simple Circle Squaring

The Manufacture of Crayons

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August 01, 1885

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