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Chimney for the Narragansett Electric Lighting Company, Providence, R. I

By John T. Henthorn

Relative Piston Speeds of Oscillating and Other Engines

By C. W. MacCord

Experiments on Masonry Arches

Edison's Electric Furnace

Theory of Drying

Lye Tanks, Oil Cooler, Eschweger Soap

New Sounding Apparatus for Submarine Researches

Photographic Chemistry

Lecture II

By R. Meldola

Photography upon a Black Background

Chemistry at the British Association

New Continuous Tube for the Rapid Examination of Sugar Solution in the Polariscope

Effect of Light on Growth

Old and New Physic

Exercise for Elderly People

By Fernand Lagrange

Earthquake in Central America

Puits De Padirac

The Fauna of Eastern Turkistan and Thibet


Building Plans and Specifications

Live Stock on Ranges

Useful Engineering Books

Micro-Organisms as Insecticides


  • Patents!

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Self-Awareness or Illusion?

Self-Awareness or Illusion?

Solving the “Hard Problem”