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A Large Steamer

The Bacchante

American Engineering.—IV.*

New Steam Dredger

Prediction of the Weather

By Klinkerfu

The Gelatino-Bromide Process

By A. J. Jarman

Preparing Gelatine Emulsion

By Photo Chemicus

American Association for the Advancement of Science

History and Methods of Palæontological, Discovery. *

By O. C. Marsh

Experimental Determination of the VELOci'l'Y of Light

By Albert A. Michelson

Philosophy of the Pupation of Butterflies

By C. V. Riley

Mythologic Philosophy

Chemical Constitution of Alkaline Amalgams

By M. Berthelot

Spectral Examination of Ytterbia

By M. Lecoq de Boisbaudran

Notes of Hospital and Private Practice in San Fran Cisco.*

By H. Gibbons

Aural Therapeutics.*

Appearance of the Tongue in Disease

By J. A. Henning

Strychnia Poisoning Treated with Chloral Hydrate, Apomorphia, and Electricity-Recovery

By C. M. Worthington

Royal Astronomical Society

Are Birds Derived from Dinosaurs?

By B. F. Mudge

The Microphone Telephone


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    September 13, 1879

    Confronting Common Wisdom