1212 [supplement page VIII.] THE COLLIERY GUARDIAN. December 6, 1918. SAVE COAL and INCREASE POWER WE have the testimony of users to confirm the accuracy of this state- ment. If you want proof we will furnish it upon receipt of your request. In fact, we want the opportunity to furnish you with the experience of others : therefore solicit your enquiry. Shall we have it ? ALLEN & SIMMONDS LTD., Piston & Piston Valve Engineers, READING, Eng. EWARTS TYPE CHAINS For COLLIERIES and MINES, &c. Elevator Buckets. Sprocket Wheels. GEO. W. KING Ltd Stratford, LONDON. E. 15 • Telegrams—“Agrikinger, London.” Telephone—18 and 662 Stratford. —“PROTAN”—t For BOILERS. A Commercial form of TANNIC ACID (containing 48-50 % TANNIN). In conjunction with Soda Ash Enables the Boiler User to compound the most efficient llllllllll SCALE REMOVER llllllllll at only a fraction of the cost of Proprietary Compositions. Composition can be based on analysis of water. Samples and further particulars from CLEMONS, MARSHALL & CARBERT, Branch of The Yorkshire Dyeware and Chemical Co. Ltd., Leeds. PRINCEPS PATENT “DEFLECTOR” OIL SEPARATOR. By’ • Bi ONE OF THE LARGEST EXTRACTORS MADE IN THIS COUNTRY. Capacity, 300,000 lbs. of steam per hour, 60" diameter main. PRINCEPS & CO., Engineers, SHEFFIELD.