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Features

The Catacombs of Rome

Diamond-Bearing Meteorites

Practical Tests of Compound Locomotives

By C. H. Hudson

Sections and Mechanical Conditions of Car Wheels

By P. H. Griffin

Holzapfel's Flanged Plate System of Shipbuilding

Combined Steam Tug and Suction Dredger

New High Speed Gunboat

A Domestic Petroleum Motor

The Manufacture of Glass Pots

Naval Transformations

Manganese Oxalate as a Drier

Pictorial Telegraphy

Solar Printing

New Method of Purifying Gutta Percha

By Alexander Grammont

Secondary Batteries

Introduction

By G. H. Robertson

Purification of Waste Water by Electricity

An Italian Court Scene

Mining Ventures in Spanish America

By Louis Janin

The Diminution of Drunkenness in Norway

Ozone

Anatomy and Art

The Disposal of Town Refuse and of Garbage

By Wolcott C. Foster

The Tin Plate in Surgery

Recent Progress in Industrial Chemistry

Ammonia

Patents!

Steam Heat on Permanent Magnets

Useful Engineering Books

Detection of Adulterations of Basic Slags

By Morgan

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