Car-Ferry Steamer “Detroit,” Michigan Central Railroad

Epochs in Marine Engineering

The Manufacture of Bronze Colors

The Steel Hardening Metals

The Artificial Production of Rubies

Distance Control by Electric Waves

A Novel Conduit Line

By the Paris Correspondent of Scientific American

Producer-Gas Power Plants

The Cultivation of Medicinal Plants

Daytime Observations on the North Star

The N-Rays of M. Blondlot

Discovery

Discoveries made in Recent Excavations at Westminster Abbey, London

Heat Transmission: What it is and how it is Attained

The Palace at Nippur not Mycenaean but Hellenistic

Electrical Notes

Engineering Notes

Trade Notes and Recipes

Patents!

Selected Formulæ