A One-ton Chain-driven "truck."

First-published Particulars of a Model Which is in Much Use in U.S.A. During the past few months we have had particulars of a number of accepted types of American " truck......

A New Form Of Worm Gear.

A worm gear possessing a considerable amount of originality, and for which important claims are made, has been produced by Messrs. Fleury and Gauthier, and is now being tested......