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Recent Decisions Relating to Patents

Michela's Stenographic Reporting Machine

Electrical Totalizing Counter

Photophone Experiments

Gas and Electricity as Heating Agents

By C. W. Siemens

Simple Holtz Electrical Machine, and Some Experiments in Static Electricity

By M. Hopkins

Silver in Sedimentary Rocks

The Different Qualities of Iron Ores

By Jacob Reese

The Work of Propeller Wheels

By H. C. Pearsons

Fitzjohn Tower, Hampstead

The Cunard Steamship Servia

Plattsmouth Bridge

Improved Screw Propeller

The Monte Penna Wire Ropeway

Royle's Oleojector

Separation of Fats, Oils, Glycerine, etc.

Examination of Wine

By V. Wartha

Oxidation of Building Materials

Ascent of Chimborazo and Cotopaxi

By Edward Whymper

Jupiterian Observations

The Peasant Population of Servia


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