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The Policy of Patent Laws

Epsilon Gunboats for China

Locomotive Air Reservoirs

Diving Bell used in the Construction of the Second Dry Dock in Pola

Improvement in Steam and Air Gauges

Shoe Pegs and Pegging Machines

Electric Drawing Apparatus

New Kaleidoscope


Decomposition of Chlorine


Materialism and its Lessons

By Henry Maudsley


Health and Recreation

Nitrite of Amyl

The Stigmata of Maize and the Arenaria Rubra in Diseases of the Bladder

Promotion of Public Health

Instructions for Disinfection, Prepared for the National Board of Health, 1879.

Some Facts and Thoughts about Light-Emitting Animals

By P. martin Duncan

Demonstration of the Rotation of the Earth by the Gyroscope

By J. M. Arnold

Evaporated Fruits

The Bright Lines of Comets

Yearly Renewal of Strawberry Beds

By J. M. Smith


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