Fuels From Waste.

Some Account of the Paris System for the Collection of House Refuse. I N HIS RECENT PAPER before the Institute of Cleansing Superintendents, Mr. J. A. Priestley, of Sheffield,......

The " Giant-grip Driv E ."

The Albaugh-Dover Tractor Plough and Its Unusual Features. By Henry Sturrney. T HERE ARE CLOSE on 200 different makes of farm tractor produced in the United States, the majority......