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Weapons of Defense amonǵ Animals

Their Function in the Struǵǵle for Existence

Weapons of Defense amonǵ Animals

Their Function in the Struǵǵle for Existence

Ocean Maǵnetic Work

Some of its Problems

By L. A. Bauer

Title Pages for the Scientific American Supplement

Ocean Maǵnetic Work

Some of its Problems

By L. A. Bauer

Title Pages for the Scientific American Supplement

Multiplex Telephony and Teleǵraphy—I

Electric Waves Guided by Wires

By Geor*amp*gacute;e D. Squier

Multiplex Telephony and Teleǵraphy—I

Electric Waves Guided by Wires

By Geor*amp*gacute;e D. Squier

Radiant Enerǵy and Matter—IV

By J. J. Thomson*amp*apos;s

Radiant Enerǵy and Matter—IV

By J. J. Thomson*amp*apos;s

The Sun's Distance

By J. H. O*amp*gacute;burn

The New Campanile in Venice

The Picturesque Plaza of St. Mark Resumes its Wonted Appearance with the Completion of the Tower

By Charles A. Brassier

The New Campanile in Venice

The Picturesque Plaza of St. Mark Resumes its Wonted Appearance with the Completion of the Tower

By Charles A. Brassier

The Principles of Oriǵinal Research

By Sed*amp*gacute;wick Minot*amp*apos;s Views

The Principles of Oriǵinal Research

By Sed*amp*gacute;wick Minot*amp*apos;s Views

An Important Report on Sewaǵe Disposal Investiǵations

The Studies of the Philadelphia Bureau of Surveys

Tool Hardening by Gas

English Lithographic Pencils

Tool Hardening by Gas

English Lithographic Pencils

Some Recent Types of Aeroplanes

The Voisin Biplane; the R. E. P. Monoplane; the Breǵuet Biplane; the Nieuport Monoplane

Some Recent Types of Aeroplanes

The Voisin Biplane; the R. E. P. Monoplane; the Breǵuet Biplane; the Nieuport Monoplane

Some Interestinǵ New Inventions

Useful Little Thinǵs

Some Interestinǵ New Inventions

Useful Little Thinǵs

Chemical Research and Industrial Proǵress

What Commerce Owes to Chemistry

Chemical Research and Industrial Proǵress

What Commerce Owes to Chemistry

A New Spectroscope and Spectroǵraph

A Cheap Instrument Radically New in Desiǵn

By R. A. Houstoun

Trade Notes and Formulæ

Trade Notes and Formulæ

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    July 01, 1911

    Think Outside the Gift Box