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Features

English Patents Issued to Americans

Memorial Church, St. Petersburg

Plowing in Egypt

Recent Progress in Agricultural Science

By H. P. Armsby

The Panama Canal

By Manuel Eissler

Rhea

By J. R. Royle

Pieris Japonica

Mr. Jay Gould's Residence on the Hudson

White Cedar

Artificial Propagation of Oysters

The Wild Boar and its Young

A Lignified Snake from Brazil

Career of a Man-Eating Tigress

A New Hygrometer

The Microscope, and some of its Recent Revelations

By John Rogers

Determination of Zinc in Ores

By A. Millot

Instrument for Tracing Curves by Points

The Recovery of Sulphur from Alkali Waste (Schaffner and Helbig's Process: A Record of Recent Results

By Alexander M. Chance

The Electrolytic Company, London

Distinctions Between Organisms and Minerals

Applications of Electricity to Railway Trains

The “Sun” Electric Lamp

A Vibrating-Bell Telephone Signal

An Experimental Research on Tuberculosis

How Seal-Skins are Dressed

The Differential Staining of Nucleated Blood Corpuscles

By Allen Y. Moore

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