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The Manufacture of Liquid Carbonic Acid Gas

Floating Soaps

Nomenclature or Vernacular in Brick Making

By S. K. Fletcher

An Inexpensive Mercurial Air Pump

By R. W. Wood

The Spirograph

New Registering Barometer

The Statoscope

Simple Method of Measuring Heights in Hasty Topographical Surveys

Atkinson's Cycle Gas Engine

Peary'S Greenland Trip

By R. E. Peary

Swing Jib Countersink Drilling Machine

Animal Life on a Coral Reef

The Breeds of Dogs

Malarial Maladies and their Geographical Extension

By Angelo Celli

To Those Who Neglect Shadows

An Examination in Pharmacy

A Simple and Rapid Method of Gravimetric Analysis

By G. H. Bailey and J. C. Cain

Artificial Hornblende

Useful Engineering Books

Building Plans and Specifications

Kaolin Beds


The Scientific American Supplement. Index for Vol.31

January-June, 1891.


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    June 27, 1891