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Features

A New Decision by the Supreme Court Relating to Foreign and American Patents

A Swedish Meteorite

The Preparation of Microscopical Sections from Barks and Roots used in Pharmacy

The Steinbach Cave near Sulzbach

Aluminum Bronze and Brass as a Suitable Material for Propellers

Cast Iron and its Treatment for Artistic Purposes

By W. R. Lethaby

New York City Aqueduct: Its Engineering Features and Design

By Alex. Crawford Chenoweth

Sibley College Lectures.—1889-90

By the Cornell University Non-Resident Lecturers in Mechanical Engineering. II.—Circulation of Water in Steam Boilers

By Geo. H. Babcock

A Three-Cylinder Gas Motor

Smokeless Explosives

By Frederick Abel

Milk of the Bottle-Nose Whale

(Globiocephalus Melas.)

By Percy F. Frankland and Fred. J. Hambly

A Sensitive Test for Certain Impurities in Mercury

By G. Gore

Fish Breeding: A Surrey Trout Farm

How Circus Performers Learn to go Bare Back

Tests of Vision

Method of Preserving the Color of Plants in an Herbarium

Building Plans and Specifications

Useful Engineering Books

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