Differential Gears Explained And Illustrated.

It will be noticed (Fig. 2) that the shaft is separated into h.% t) halves, and that each road wheel is fixed to a separate half of the main axle. Keyed to each half axle is a......

Correspondence.

Motors for Business Calls. The Editor, " THE COMMERCIAL MOTOR." Sir :—With reference to the illustration which you published last week of Mr. Jesse Boot in the 16h.p.......