SA Supplements

Inside a Lighthouse

A Scientific City

Memory

Handwriting

Sagnes' Machine for making Moulds for Objects in Copper and Bronze

Meinesz's Compressed Air Dredging Apparatus

Drainage of Large Marshes

The Cost of Steam Power

Forged Steel Wheels

American and English Freight Cars

The Hull and Barnsley Railway Swing Bridge

Ceramic Photography

The Cable Railways of Chicago.—Some of the Difficulties and Objections to their use in Crowded Cities

Relief Printing Blocks from Photographs

Division of the Weight Unit

The Dendrometer.—An Instrument for Measuring Heights of Trees

The Decay of Building-Stones

The Baume Hydrometer Scale

Radiguet's Electric Light Apparatus

The Magnetic Balance

The New Morphological Element of the Blood

The Eruption of Krakatoa

Notes on New Caledonia

Rare Fishes

Trout and Trout Culture

Lead

On the Condensation of Gases

Experiments on the Colors of Gems

Correspondence - March 22, 1884