Volume 21, Issue 17
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Features
Concrete Building
Application of Photography to Astronomy
Difficulties to be Surmounted in Working the Suez Canal
The Peach Tree Insect
The Holstein Intermaritime Canal
Early Attempts for Direct Intermaritime Communication
Foster's India-Rubber Decoy Duck
“The Welcome Stranger” Nugget, Found Near Dunolly, in Australia
The Contraction or Shrinking of Timber
The Relation of Mechanism to Art
The Manufacture of Sulphuric Acid
From the Report of J. Lawrence Smith, United States Commissioner to Paris Exposition.
Improvement in Open Fire Grates
The Exhibition of the American Institute
Facts About the Croton Water Supply
Circular Motion and Rectilinear Motion
Interesting Patent Decision When Does an English Patent Take Date?
Steam Power on Canals
Osborn's New Treatise on the Metallurgy of Iron and Steel
New Publications
An Essay Upon Force in Nature and its Effects Upon Matter. Cincinnati: Robert Clarke&Co., Publishers.
Manufacturing, Mining, and Railroad Items
Recent Americans and Foreign Patents
Under this heading we shall p ublish weekly notes oj some of the more prominent home and foreign patents.