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Features

Phototherapy

A Curious Church in Spoleto

Sweets Sparkling with Glass

Plant Oils as Food

Cost of Acetylene

A Gas Blowing Engine

New Rotary-Speed Indicator

Instructing Trainmen on the Boston Elevated

Sepia

The Cup Challenger “Shamrock II”

Contemporary Electrical Science

Mechanical Traction in Paris

The Commercial uses of Peat

A Primitive Frame for Weaving Narrow Fabrics

By Otis Tufton Mason

The British and German Antarctic Ships

The Currents in the Gulf of St. Lawrence

Co-Operation in Observing Variable Stars

The Houdaille Calcimeters

Amadou, Touchwood, Tinder or Spunk: Its History and Uses

By Frederick Le Roy Sargent

Unexplored Canada

Left and Right-Handedness

Trade Suggestions from United States Consuls

Selected Formulæ

Trade Notes and Receipts

Departments

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May 18, 1901

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