out the new method at the Dalmarnock Gas Works. Furthermore, the
confidence which has been inspired in the minds of the members of the
Glasgow Corporation Gas Committee and their engineer regarding the
actualities and possibilities of the Siemens system of firing gas
retorts, in its most improved state, is such that arrangements are
being made for starting shortly to apply it throughout at the Dawsholm
Station, which is situated in the suburban burgh of Maryhill, and some
four or five miles distant from the Dalmarnock Works in a northwestern
direction. The station just named, which is also a very large one, will
probably require two years for its conversion.

We shall now give some account of the structural arrangements adopted
for producing cheap gaseous fuel, and for turning that fuel to the
greatest advantage in firing the retorts for the purpose of carbonizing
the cannel coal used as the source of the gas.

The gas producer, which is represented in vertical section in Fig. 2, is
a cylinder of brickwork inclosed in a casing of malleable iron. It is 7
ft. 6 in. deep, and 3 ft. in diameter, which becomes reduced to 20
in. above, where it is closed by means of a cast-iron lid, which is
continuous with the floor of the retort house. There are no firebars
at the bottom, so that the fuel rests on a floor of firebrick. At the
bottom of the walls of the producer there are several holes about 1 ft.
in length by 6 in. in height. By means of these openings any clinker
that may form and the ashes of the spent fuel can readily be withdrawn.
They also allow of the admission of air to maintain the combustion in
the lower portion of the mass of fuel; and at each opening there is a
malleable iron tube for delivering a jet of steam direct from a steam
boiler. We shall subsequently explain the functions performed by the
steam.