Petroleum and Coal in Venezuela

One Thousand Horse-Power Corliss Engine

Opening of the New Workshop of the Stevens Institute of Technology

Complete Prevention of Incrustation in Boilers

Light Steam Engine for Balloons

Railway Turn-Table in the Time of Louis XIV

Rolling-Mill for Making Corrugated Iron

Eddystone Lighthouse

Tangye's Hydraulic Hoist

New Signal Wire Compensator

The Constituent Parts of Leather

How Veneering is Made

Power Loom for Delicate Fabrics

New High School for Girls, Oxford

Progress in American Pottery

Photo Tracings in Black and Color

Photographic Notes

On M. C. Faure's Secondary Battery

Physical Science in our Common Schools

Geographical Society of the Pacific

Coccldæ

Experimental Geology

Artificial Production of CalcarEous Pisolites and Oolites

The Behring's Straits Currents

Timber Trees

Topical Medication in Phthisis

Agricultural Items

On the Law of Avogadro and Ampere

Blood Rain

Dyeing Reds with Artificial Alizarin