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The Shapes of Leaves and Cotyledons

By John Lubbock

Bustards at the Zoological Gardens


Objects for the spectroscope.


Velocity of the Wind on the Eiffel Tower and at the Forth Bridge

Modern French Artillery

The Gun Factory of the Cail.

The Morgan Engineering Works

Sailing Ships

Great Tower for London

The Vyrnwy Aqueduct to Liverpool

The Asphalt Industry in France

Automatic Gas Retorts

The use of Gas for Cooking Purposes

Early Printing in America

By A. De F.

A Simple Barker's Mill

A Sewing Machine Motor for Amateurs

By C. D. Parkhurst

The Fixation of Nitrogen

By Charles A. Fawsitt

Building Plans and Specifications


Useful Engineering Books


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    July 19, 1890

    Science for the Modern World