October 4, 1918.

THE COLLIERY GUARDIAN.

695

By Tests The Best

RESULT OF LATEST

TRIAL

COAL 0 |Qo/
SAVED fit /o

INCREASE
IN
EVAPORATION

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

100,000

supplied or on order.

Approved by both
British and French
Governments—that’s
the Sterling record
of the

Hailwood . .

Combustion
Tube Lamp.

Gives 1| to If C.P.,
it is cheaper and
more reliable than
an electric lamp—
and it has gas de-
tecting properties,
too.

HAILWOOD S
COMBUSTION TU0A

LAMP	Z



Hailwood
Combustion

Tube Lamp
is the ideal lamp for
the miner.

Because of the scien-
tific principles upon
which its construction
is based, it is not readily
smoked up, may be
tilted without being
extinguished, and is
easy to clean.

You will never be satis-
fied with another lamp
after you have seen
the clear white light of
the Hailwood.

Our Circular gives the
details.

Send for a Copy.

Ackroyd & Best L°

BEACON WORKS,
MORLEY, YORKS,