SA Supplements

July 1894

Volume 38, Issue 969supp

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Features

L'ecole Polytechnique

Portable Intrenching Tools for Infantry

NOTE.—In the German service, normal shelter pits are considered safe againsst small-arm projectiles and shrapnel fragments only when there is an earth defense in front of sixty inches.

Lieut W. C. Wren

The Work of Hertz

Microphonic Detectors

The Scientific Work of Tyndall

Professor of Natural Philosophy, R.I.

Lord Rayleigh

Photographic Reliefs for Decorative or Ornamental Use

Instantaneous Photograph of a Kicking Horse

Lard

H. W. Wiley

American “Tripoli”

E. O. Hovey

Rose Growing for the New York Market

A Chat on Orchids

N. Pike

Passiflora Manicata

Footprints of Vertebrates in the Coal Measures of Kansas

O. C. Marsh

Assyrian Sculpture at the British Museum

George Clinch

Helen Keller

Katharine D. Partridge

The Legal Aspects of the Disorder at Chicago

Austin Abbott

The Bamboo—Wan-Lo's Composition

Elizabeth Cumings