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Features

The Linde Ice Machine

Heating by Hot Water

A Hot Water Engineer

Improved Varnish Boiler with Automatic Regulator

Twin Screw Steam Launch

Twin Locomotive

The Steam Yacht “Lady Franklin”

New Automatic Siphon

By William Taylor

Pumping Gold

An Exhibition of Wall-Papers

Thin Plates of Metal

By T. Egleston

The Smith-Odling Miner's Lamp

Duplex Drop Shutter

By W. Bedford

A New Determination of the Chemical Equivalent of Aluminum

The Ammonia-Soda Process

Compressed Gas

Manufacture of Sugar

Absorption of Gases by Charcoal

On A New Series Of Equivalents Ob Molecules*

By Angus Smith

Relations Between Temperature and Volume in the Generation of Ozone, with Description of a New Ozonator

Important Extension of the Use of the Blowpipe in Quantitative Determinations

Bronchial Asthma

Cold Water in Typhoid

By J. W. Kibbee

The Globular Richness of Human Blood

New Remedies

Grapes as Food

Leprosy in America

The Carolina Twins

Food Reforms

Jacob Bigelow, M.D., LL.D.

James Watson Robbins, M.D

The “New Departure”—What it “Believes” and What it “Contends”

By Henry S. Chase and St. Louis

Home Made Superphosphate

A New Industry. —Fig Culture at the North a Success.

By G. F. Needham

The Torrey Botanical Club

The Reproduction of Eels

Mackerel

Archeological Explorations in Tennessee

By F. W. Putnam

On the Recent Eruption and Present Condition of Vesuvius

Sandstone in Coal

On Some Physical Properties of Ice; On the Transposition of Bowlders from Below to Above the Ice; And on Mammoth Remains

By John Rae

On Certain Means of Measuring and Regulating Electric Currents

By C. W. Siemens

A New Battery

The Solar System

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    April 12, 1879

    Confronting Common Wisdom