Volume 60, Issue 1552supp
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Features
Hydrocarbon Oils and their Value as Lubricants, with a Few Practical Tests
Production of Oxygen and Oxygen Light
Soluble Ferments
The Testing of Photographic Dry Plates
High Speed on Steam and Electric Railways
Production of Salt in 1904
Bacon and his Time
Diatoms, the Jewels of the Plant World
Discoveries at Ephesus
Experiments in Destroying Black-Flies
Submarine Signals
An Automatic Cask-Recording Machine
By The English Correspondent Of Scientific American
The First Producer-Gas Boat
Diamonds
Washing and Concentrating Machinery