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Features

Across Greenland on Snow Shoes

Nansen's Greenland Expedition

Canadian Pacific Railway, British Columbia

The Volcanic Region of Hawaii

Among the Pennsylvania Slate Quarries

By George P. Merrill

The Brown Paca

A Plague of Flies

Parasites of the Vegetable Kingdom

The Poison Apparatus of the Mosquito

By G. Macloskie

Daisy Trees

(OLEARIAS.)

On Organic Matter in the Atmosphere

By Marion Talbot

Yeast: Its Morphology and Culture

By A. Gordon Salamon

Dangers Attending Labor in the London Docks

The Gases of the Blood

By John Gray McKendrick

Radii of Curvature Geometrically Determined

By C. W. MacCord

Central Valve Triple Expansion Engines

Absolute Vacuum as a Non-Conductor, and its Bearing on Electric Theories

By P. H. Van Der Weyde

Tin

By Leo Vignon

Useful Engineering Books

Building Plans and Specifications

Detection of Alkaloids after Death

By Pellacani

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January 19, 1889

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