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A Controversy on Life

Two Great Biologists Differ

The Bubonic Plague—II

Its Menace to the United States of America

By Howard D. King

Photographic Observation of Comet 1911 c(Brooks)

By E. E. Barnard

Discovering Utilities in Desert Crops

Wanted: A Patent System to Protect “New Agricultural Products”

By Z. E. Black

A Thirty-ton Electric Traverser for Serving Annealing Furnaces

An Experimental Study of Vortex Motion in Liquids—II

Lord Kelvins's Smoke-ring Model of the Atom

By Edwin F. Northrup

A Chapter in Industrial Sanitation

Vacuum Cleaning Applied to Machinery in Textile Mills

By J. B. C. Kershaw

Potash, Silica and Alumina from Feldspar

By Edward Hart

Electrolysis from Stray Currents—III

Damage Caused to Underground Structures

By Albert F. Ganz

Phosphorus and its Compounds

By Edwy Godwin Clayton

Sinhalese Iron and Steel of Ancient Origin—I

Beginnings of the Iron Age

By Robert Hadfield

The Nature, Origin and Maintenance of Life

Inaugural Address of the President of the British Association for the Advancement of Science

By E. A. Sch*amp*auml;fer


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