The Re-tubing Of A Steam Boiler.

By " Engineer-in-Charge." The tubes in locomotive-type boilers, as fitted to steam wagons and tractors, unless they receive the necessary amount of attention, are liable to......

The Supply Department.

Selected Information which is likely to be of Isterest to Makers, Owners, and their Buyers. Reserve Cells for High-tension Ignition. A new " dry " battery, known as the " Dura "......