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Anderson's Gas Washer and Scrubber

Gas and Gas making.—II

By L. P. Gratacap

The Light and Energy of Electricity and Gas

By J. T. Sprague

The Great Suspension Bridge between New York and Brooklyn.—Pay of Officers, Engineers, and Workmen

On the Requisite Thickness of Cast-Iron Water Pipe under Heavy Pressure

By C. H. M. Blake

Automatic Feed Water Apparatus

The Australian Breakwater

The Polyphemus

The Wear of Steel Rails

New Ironing Machine

A New Developer for Dry Plates

Summer Beverages

Hard Wood Chair

Gilt Communion Cup

Test of the Eyes by Electric Light

The Care of Young Children


Microphotography with Tolles' 1/75 Inch Objective

By Ephraim Cutter

Local Anæsthesia by Congelation

Nature of Cohesion and its Chemical Significance

By Fried. Mohr


By E. Fremy

Alizarin Carmine

On the Size of Molecules

By N. D. C. Hodges

M. Gaiffe's Galvanic Deposits of Cobalt

Extraction of Green Coloring Matter from Coffee

Conveying Acids

Chemical Composition of Mineral Coal

Abridged from Comptes Rendus for the Franklin Journal

By Pliny Earle Chase

Bleaching Ostrich Feathers

Apparatus for Measuring Fire Damp

The Photographic Observation of the Oxygen Spectrum

By Hermann W. Vogel

Magnetization of Molten Iron

Influence of Boracic Acid upon Acetic Fermentation

By A. Herzin

Electro-Deposition of Nickel


By Clemens Winkler

A Mordant from Lees of Wine

Water in the Preparation of Raw Silk

[Communicated by the Instituto Technico Superiore of Milan]

The Tar Colors and the Electric Light

By Greiff

Remedy for Blow Holes in Cast Metal

Norwegium—A New Metal

The Spiritual in Man

The Affinity of Languages

Prize Animals

Culture of the Raspberry

The Geology of Gibraltar

Dog Lore


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    September 06, 1879

    20% Sitewide for President's Day