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Features

Raising the Wrecked Steamship Peer of the Realm

The Luiz I. Bridge at Oporto

The Building of Crank Shafts

The Water Supply for New York City

By R. D. A. Parrott

General Principles Governing the Action of Carriage Wheels

The Balance Water Motor

The Breaking of Grindstones

Radii of Curvature Geometrically Determined

No. III.—The Archimedean Spiral

By C. W. MacCord

Artificial Stone Making

The Parisian Fire Department

American Association for the Advancement of Science, Buffalo Meeting, 1886

How to Make Printing Plates or Engravings by Etching.—Gillotage

Apparatus for Manufacturing Carbureted Air Gas

New Apparatus for the Estimation of Carbonic Acid in the Air

By Thomas C. Van Nuys

The Posometrical Drop-Counter

Professor Newcomb's Determination of the Velocity of Light

The Phonopore

The Soaring of Birds

By I. Lancaster

Clerc's Automatic Commutator

Parisian Carmine

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