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Features

Influence of Electricity upon Plants

The Working of an Electrolytic Copper Refinery

By G. Gore

A Six Inch Quick Firing Gun

High Power Batteries

Improved Rope Railway—Aerial Carrier at the Laudun Sugar Works

Center Board Yachts on the Clyde

A Chronometer giving the 1/1000 Of a Second

Paint Oils

A Concentrated Rapid Hydroquinone Developer

History of the Cotton Industry

A Detective Photographic Camera

The New York “World”

Lippmann's Experiments in Photographing Colors

Combined Toning and Fixing Bath

African Notes

Exhibition at Budapest

Curious Musical Instruments

Adiabatic Compression and the Velocity of Sound

By Henry A. Mott

Memory

By J. O. Hirschfelder

A New Method of Embalming and Preserving Animal and Vegetable Tissues

Pharmaceutical Etymology

Protection of the Apple Crop

The Culture of Figs

By W. F. Massey

Fertilizers

Outline of the History of Commercial Fertilizers

A New Method of Testing Honey

By Oscar Haknlk

Building Plans and Specifications

Extraction of Borax in California

To Remove Tannin from Tea

By H. Grimshaw

Useful Engineering Books

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June 13, 1891

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