the fire gases and other impurities which must be an objection to all
methods of heating by means which are not of a purely mechanical
nature. This principle not only recommends itself as scientifically
correct and suited to the purpose in view, but is also a very simple
and practical one. It affords the means of applying the heat at the
point where it is required to do the work without unduly heating
parts where heat is unnecessary; it secures absolute uniformity,
perfect continuity, and the highest possible fuel economy.

[Illustration: FIG. 11.--Japanning and Enamelling Stove for
Iron-Bedsteads and Household Ironmongery with Truck on Rails.]

[Illustration: FIG. 12--Permanent Japanning and Enamelling Stove for
Kitchen Utensils built in Masonry.]

The nature of the work to be executed in the different classes and
various sizes of stoves vary so greatly and indefinitely that only by
careful attention to the special requirements of each case, on the
part of the designers and constructors, is it possible to obtain the
most satisfactory results.

The arrangement of fixing the pipes round the lower walls of the room
in this form of stove is somewhat cumbersome, but in a roomy stove
this slight drawback is not felt quite so much. However, it seems a
good principle to leave every inch of internal space available for the
goods to be enamelled or japanned, This principle is carried out to
the letter in the other form of stoves described and illustrated in
the sequel.

The figure shows a section through single chamber japanning and