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Features

The New Observatory at Nice

On the Constitution of Gaseous Heavenly Bodies

The Fresh Water Flora and Fauna of Central Park

Preliminary Paper

By L. P. Gratacap and A. Woodward

How to Dispose of House Sewage

By M. T. Clark

The Removal of Tattoo Marks

Examination of Bread and Flour

Pasteur on the Prevention of Hydrophobia

Henry Fawcett

The Antiquity of Man

By Edward Clodd

Experiments in Gaseous Combustion

Nitro-Glycerine in the Oil Regions

Steam Yachts

Center Board Catamaran

The Working of Gas Engines

Vertical Tandem Engine

A Perpetual Motion Machine of 1812

Fustian, Beaverteen, Moleskin

Vertical Cold-Air Machine

Utilizing the by Products from Coke Ovens

By C. Otto

Preparation of Maltose

Castle Hummelshain, Near Kahla, Thuringia

Influence of Light on the Development of Yeast

The Fusion of Iron

A Petroleum Engine

The Vapors of Metals

The Spectroscopic Examination of the Vapors Evolved on Heating Iron, Etc., at Atmospheric Pressure*

By John Parry

The Geological Structure of the Sahara

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December 27, 1884

Confronting Common Wisdom