The Channel Tunnel
Revival of an Old Project
Features
Tractors for Farm Service
Types Exhibited at the Soissons Contest
The Chemical Effect of Polarized Light
Paved Roads and Road-Laying Machinery
Road Construction Illustrated by Models
What are the Ten Greatest Inventions of our Time, and Why?
Scientific American Contest: Third Prize Essay
Our Universities and Industrial Research
Porcelain
Its Manufacture and Decoration
Modern Methods of Measuring Temperature—II
Electric and other Thermometers for use in Industrial Operations
The Olfactory Nerve of Insects
Apparatus for Catching Cinders in Gases
A Method Applicable to Blast Furnace Gas Cleaning
Dial Scales
The Origin and Significance of Starch
Its Importance in Plant and Animal Economy
