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Features

Indian Tea

The Floating Gardens of Lake Srinagar

American Apples

The House Wren as an Insect Destroyer

The Great Bee Disaster

Direction of Sap Flow

Traction of Locomotives—Rule for Calculating

To the Editor of the National Car-Builder

A Broken Crank Repaired with Wire Rope

The Preservation of Iron and Steel

Machine for Sizing, Glazing, and Stretching the Warp

Torpedo Practice–Jumping a Boom

Bungs

The Quadrature of the Circle

The Melbourne Exhibition

Stone's Improved Heliograph

Jute Brussels Carpeting

Design for the Manchester Town Hall

The Adulteration of Olive Oil

By Michael Conroy

Brief Review of the Most Important Changes in the Industrial Applications of Chemistry within the Last Few Years

Materials Employed in Washing

By J. W. Mallet

Analysis of Soaps

Chemical Examination of Volatile Oils

By Wm. L. Dudley

Chemistry in its Application to Brewing

Violet Illumination of the Retina

Observationts on the Coloring Matter of Flowers

Translated by ADOLF G. VOGELER,Ph G.

Report of the Committee from American Public Health Association on a Plan for the Prevention of the Spread of Venereal Diseases

By Albert Gihon

A Sulphureted Hydrogen Apparatus

By Peter Hart

Spontaneous Ignition of Vegetable Substances by Nitric Acid

Malignant Pustule and its Treatment

Patents

Small-Pox.–The Result of Attempting to Check its Spread in Chicago

By Oscar C. De Wolf

The Propagation of Hilis of Razor

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    July 02, 1881

    Think Outside the Gift Box