Equipping A Coach For Wireless Reception.

A Simple and Clear Explanation of Sound Amplification by Means of Transformers. The Analogy of the Magneto. I N THE article which appeared in last week's issue of The Commercial......

An Ambulance For French Military Use.

Designed to Accommodate Five Stretcher Cases, this Body Has Many Interesting Features. THE LATEST ambulance designed by Automobiles H. Berliet, of Lyons, Franco, is constructed......