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Cognac and its Working Classes

Report of Consul Earle

The Krupp Monument in Essen

On the Observation of Sudden Phenomena

By S. P. Langley

Wire Cables

The Sorbonne, Paris

Members of the Royal Society

The New Buildings of the Sorbonne, Paris

How Salt is Made

Armor Plate

Tractive Power of Locomotives

Improved Rollers

Detection of Mercury in Minerals

By Alexander Johnstone

Determination of the Thickness of Cover Glasses on Mounted Microscope Slides

Electro-Dynamic Repulsions and Rotations

Cable Telegraphy

By Patrick Bernard Delany

The Dwarf Trees of Japan

The Sugar Cane Disease

A Petrified Forest in Arizona

On the Occurrence of Paraffin in Crude Petroleum

By E. A. Partridge

Hydroquinone as a Developing Agent

By J. Wilson Swan

Saccharification by means of Diastase

Improvements in the Manufacture of Starch, Dextrin, and Grape Sugar

The Terrestrial Origin of the Oxygen Rays in the Solar Spectrum

By J. Janssen

Crystalline Tanghinine from the Tanghinia Venenifera of Madagascar

By M. Arnaud

Absorption of Hydrogen by Metals

Useful Engineering Books

Building Plans and Specifications


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September 07, 1889

Of Shamrocks and Science

Happy St. Patrick’s Day