Volume 21, Issue 522supp
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Features
The Manipulation of Heavy Forgings
A Temporary Rudder
Natural Gas at Pittsburg
Its History and the Corporate Organization
The Combustion of Explosive Mixtures Formed with Coal Gas
A Village School House
Testing of Thermometers
Well in the Courtyard of the Hotel De Cluny, Paris
Oak Fireplace and Mantel
The Coloring Matter of Wine and Vegetable Coloring Matters
Ty-To-Maen, St. Mellons, Near Cardiff
Prison Labor
Strength and Dexterity
Theater Secrets
Correspondence by Means of Pigeons
Coiling Metal Tubes at the Inventions Exhibition, London
The American Public Health Association
On Physical Training in Germany