Features
The Gold Mines of West Africa
The Passy underground Railroad
Cast Iron
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.”
Miscellaneous Notes
Engineering Notes
Selected Formulæ
Approved Lightning Protection
A Short Treatise on the Historic and Modern Lightning Rod and its Daily Incorrect Application
