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Features

Electric Energy from Carbon without Heat

Sanitary Trains

Etiology of Scarlet Fever

By E. Klein

Improved Hay Press

Asbestos Theater Curtain

Writing Apparatus for Engraving Small Figures

By A. Repsold and Sohne

The Development of the Mercurial Air Pump

By Silvanus P. Thompson

Eli Terry and the First Wooden Clocks

Wool Hat Making

Polishing Metals and Polishing Agents

A New Platinotype Process

Photo. Wrinkles

MOUNTING BOARD

By Alexander Kellar

The Galioscope

Telescopes: their History and the Discoveries made with Them

Universal Optical Apparatus

By V. L. Rosenberg

Hughes' Induction Balance

Preparation of Nitrogen and Analysis of Air by Nitric Oxide

By T. O*amp*apos;conor Sloane

Electrical Telephone Boxes

Snow Hall of Natural History, at Lawrence, Kan

Chemical and Allied Industries

Group VII.—Dyes and Coloring Matters from other Sources than Coal Tar

By Watson Smith

Distilling and Maturing Alcohols

By J. Wallace

Orsat's Apparatus

A Thermostat

By L. Rugheimer

Estimation of Metallic Iron in Slag

By G. Neumann

Building Plans and Specifications

Zinc-Copper and Tin-Copper Alloys

By A. P. Laurie

The Great Alpine Rockfoil

(saxifraga pyramidalis)

The Primitive Seat of the Aryans

By Isaac Taylor

Departments

  • Departments

    Patents - January 21, 1888

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January 21, 1888