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Features

Mahler's Portrait of Beethoven

Porous Earthenwares

By Charles Carroll Gilman

Harness Blackings, Polishes, and Waterproof Compositions

Kaolin

By Graham Spencer

Boiler Deposits

By Vivian B. Lewes

Harbors, Natural and Artificial

By F. H. Cheesewright

Statue-Surmounted Tower with Oscillating Beam, Proposed for the Columbian Exposition of 1893

By Oberlin Smith

Rolling Mill Engines

The North German Lloyd Steamer Spree

An Electrostatic Commutator

By Rollo Appleyard

On the Corrosion of Iron

By Robert Irvine

Henry's Electric Motor Constructed in 1831

By J. Elfreth Watkins

Insignia of Officers' Rank in the Navy

The Intensification of Negatives

Automatic Photography

Platinized Glass

Egyptian Mummy of a House Dog

Introduction on the General Characters of Mosses

By Leo Lesquereux

Notes on the Later Life History of the Flowering Dogwood (Cornus Florida, L.)

By M. Alston Read

Building Plans and Specifications

Cupressus Nabiana

Patents!

Soap for Wool Washing

The Telephone Industry

Useful Engineering Books

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    May 30, 1891

    Think Outside the Gift Box