Skip to main content

Features

Excavations in the Roman Forum

The Gold Mines of West Africa

By James Irvine

The Passy underground Railroad

Cast Iron

By R. Moldenke

Ships' Refrigerating Plants—Linde System

Trade Suggestions from United States Consuls

M. De Baye's Mission to the Caucasus

What the very Poor Eat—Dietaries of Slums in American Cities

Passiflora “Margaret Wilson.”

Engineering Notes

Selected Formulæ

Miscellaneous Notes

Approved Lightning Protection

A Short Treatise on the Historic and Modern Lightning Rod and its Daily Incorrect Application

By Nevil Monroe Hopkins

A New Device for Lighting Gas Burners

The Nature and History of Patent Rights

By E. L. Thurston

A Flashless and Soundless Gun

Patents!

Departments

    Purchase To Read More

    Already purchased this issue? Sign In to Access
    Select Format
    March 25, 1899

    Think Outside the Gift Box