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Features

Silvering Glass

The Catamaran, or Double-Hulled Sail-Boat

By Paddlefast

Three-Throw Pumps

Economy in Steam

Mechanical Appliances for Mine Accidents

By Charles Hawksley and Edward B. Marten

Mr. Ruskin's Aphorisms on Drawing

Lessons in Mechanical Drawing

By C. W. MacCord

Hardening and Tempering of Steel

By Joshua Rose

Lifting a Railway Station

A Ten-Inch Gauge Railroad

Notes on the Botany of the Rocky Mountains

Human Stature

Leyden Jar Discharge

Experiments with Atmospheric Electricity

By A. B. Harding

Watch Oils

Rapid Filtering

By C. Holthof

Testing Wool

Oil of Turpentine, Rosin and Turpentine

By Isidore Zacharias

Removal of Strong Odors from the Hands

Ingenious Method of Weighting Woolen Cloth

The Silk Industry in Europe

Coating Plates of Metal

On the Action of Various Fatty Oils upon Copper.*

By William Henry Watson

Wool Greasing

On the Protection from Atmospheric Action Which is Imparted to Metals by a Coating of Certain of their own Oxides Respectively

By John Percy

Wool and Rag Cleansing

Action of Cyanogen on Albumin

Detection of Fatty Matters Fraudulently Introduced into Butter

By C. Husson

Freezing Point of Ether

By A. P. N. Franhuimont

Presence of Benzene in Coal-Gas

By M. Berthelot

A New Series of Acid Salts

By A. Villers

Experiments Relative to the Formation of Ultramarine

By J. F. Plicque

Metanethol Camphor

By P. Perrenoud

Zinc in Animals and Plants

By G. Lechartier F. Bellamy and F. Bellamy

Cheap Greenhouses

Labor-Saving Cows

Estimation of Piperine in Pepper

By Cazeneuve and Caillol

Hop Culture in New York

By Emery Gilbert Bissell

Coloring Matter of the Petals of Rosa Gallica

By Harold Senier

Winter Coloring of Leaves

By G. Haberlandt

Influence of Cold on Milk

Detection of Alum in Flour

By J. C. Bell

Extraction of Caffeine

By Legrip and Petit

Saccharifying Ferments

By J. Seegen and Kratschmer

To Destroy Chicken Lice

A Suggestion for Winter Strawberries

Cost of Raising Potatoes

Judd vs. Alberoni

Scientific American Chess Record

Problem Tournaments for 78

Solutions to Problems

Rev. L. W. Mudge, Princeton, N. J.

The Hartford Globe Problem Tournament

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