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Features

Old English Ships of War

The Transporting Power of Waves

The Helicoidal Elevator

Navigation on the Lower Seine

Herr Krupp

Roller Milling

Record Of Tests as to the Power Consumed by Various Machines Used in Roller Mills

By Henry Simon

Manufacture and uses of Leather

By E. J. Tanner

Weights of Cast Iron Water Pipes

Apparatus for Continuous Distillation and Rectification

Paving in Regular Polygons

Notes of a Recent Visit to some of the Petroleum-Producing Territories of the United States and Canada

By Boverton Redwood

Storage Batteries

Practical Electricity

The Electric Working of Metals

Telephone Investigations

By J. R. Paddock

A New Process for Estimating Carbonic Acid in Coal Gas

Chemist to the Salford Corporation Gas Department The Apparatus Being Also Applicable for the Estimation of Ammonia and (Possibly) of Sulphureted Hydrogen

By John T. Sheard

Viscosity of Lubricating Oils

Experiments with Kites

Sub-Irrigation

By H. C. Hovey

The Racing Camel

The Artesian Water of Oued Rir'

By G. Rolland

Building Plans and Specifications

Simple Methods of finding the Axis of a Prism

By Ward A. Holden

Departments

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September 10, 1887

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