SA Supplements

December 1891

Volume 32, Issue 833supp

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Features

Riparia Bridge, Snake River

Compressed Air Mine Locomotives

Machine Riveting Shipbuilding

Boiler Flue Flange Drilling Machine

Gauges and Limits for the Standard M. C. B. Automatic Coupler

Sending Photographs by Wire

New Edison Projector

Portland Cement and Portland Cement Concrete

The Relative Hardness of Various Kinds of Electro Plating

The Mechanical Action of Alternating Currents

Manufacture of Stone Ware

Edward Orton

A New Galvanizing Process

Brunton's Quartering Shovel

Production of Olive Oil

The Height of Mount St. Elias

Mark B. Kerr

Vanilla

The Decorative Treatment of Natural Foliage

Hugh Stannus

Silk Dresses and Eight Hours' Work

J. B. Mann

An Astronomer's Work in a Modern Observatory

David Gill

The Upper Atmosphere

A. C. Ranyard

Vegetarianism

Analysis of Beeswax

C. Mangold

Citric Acid in Wine

A. Klinger, A. Bujard

Citric Acid in Milk

A. Scheibe