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The Paris Exhibition

Reapers and Mowers at the Paris Exposition

The Problem of Unsinkable Ships

The Phonograph Wins a Victory

Edison's Micro-Tasimeter

Good Work from Cheap Patents

Collmann's Valve Gear

An Ether Ice-Making Machine

Improved Shoe Brush

Hughes' Microphone an Alleged Piracy

Microscopy

The Trichinæ in Shad

By John Michels

Carr's Improved Dredger

Improved Hot Air Furnace

Birds of Paradise

M. Trouve's New Telephone Improvements

A Novel Chain Pump

Plant Mind

Letters from the Paris Exhibition

Catalpa Wood

Fence Economy

Communications Received

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June 22, 1878

See the World from a Different Perspective

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