April 5, 1918.

THE COLLIERY GUARDIAN.

681

By Tests The Best

RESULT OF LATEST TRIAL

INCREASE
IN
EVAPORATION

“PERFECTA” BOILER CIRCULATOR Ltd., 39, Victoria Street, LONDON, S.W. 1.



Telegrams: “MOTOR.”

Telephone: No. 4800 (5 Lines).

''Any Size or Pressure.

Highest Class

Lancashire Boilers

FLAT OR DISHED ENDS.

4:’

BLAKE VERTICAL MULTITUBULAR BOILERS, THE
BEST WASTE-HEAT BOILER ON THE MARKET.

HIGH-SPEED Steam-Hydraulic, Forging, Bending,
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