654 THE COLLIERY GUARDIAN. March 30, 1917. ■ WATER COOLING TOWERS HOLEHOUSE’S PATENT. Holehouse’s Patent Natural Draught Cooling Tower in Colliery District. Capacity 200,000 gallons per hour. Makers of the largest Cooling Towers in the country. TOWERS IN OPERATION AT LARGE COLLIERIES IN ALL PARTS OF THE UNITED KINGDOM. The Davenport Engineering C9 L- Harris Street, Bradford. Telephones : Telegrams : 3550 Bradford (4 lines). “Humidity,” Bradford. INCREASE the CAPACITY yo%fr BOILERS By Adopting the PATENT “SUPERHEAT” FURNACE. DlRilr/or/ a THE PATENT SUPERHEAT FURNACE APPLIED TO HAND-FIRED BOIEER. This is the Most Scientific Furnace on the Market, and can easily be fitted to any type of boiler or stoker, whether mechanically or hand-fired. Write for Particulars and for one of our Experts to see you. the SUPERHEAT FURNACE Co. Ltd. Tel. Address : “ BURNALL,” BRADFORD. Tel. No. Bradford 3553. HARRIS STREET, BRADFORD.