Modern Road Rollers.

A Brief Description of the Types which are noW in Vogue. T HE DESIGN of the heavier types of steam road roller of 10 tons to 12 tons weight does not appear to have undergone any......

A Dyak's " Diesel " Method Of Igniting Tinder.

T HE PRINciPLE el ignition used in the Diesel engine, where highly compressed air generates sufficient heat to cause combustion, does not seem to be as new as one would imagine.......