• The Internal-combustion Boiler.

Is it Possible to Generate Steam Containing More Heat Calories Than Were Theoretically Contained in the Fuel Oil Employed to Convert the Water into Steam ? By C. G. Conradi,......

Opinions From Others.

Risks in Reboring Cylinders. The Editor, THE COMMERCIAL MOTOR. [2321] Sir,—I recently had an unfortunate experience with a cylinder block in which two of the cylinders had been......