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Updated: May 3, 2025
With packing-cases a large L-shaped inner apartment was made, the intervals being stopped with felt, and an empty kerosene tin and some firebricks were made into an excellent little stove which was connected to the old stove-pipe.
An empty kerosene tin and some firebricks have been made into an excellent little stove, which has been connected to the old stove-pipe. The solider fare of our meals is either stewed or fried on this stove whilst the tea or cocoa is being prepared on a primus. The temperature of the hut is low, of course, but in every other respect we are absolutely comfortable.
In the main it consists of a long flue of firebricks and slabs, which coils backwards and forwards over itself till the desired amount of radiating surface is gained. Between the coils are spaces for super-heating the air already warmed by passing over the actual furnace and into the warm air chamber, the air passing through by means of perforated bricks.
This favoured region supplies also most of the fluxes required for the manufacture of steel, and even clays for firebricks.
When we have to do with the reduction of samples of refractory ores, testing the comparative fusibility of different samples of firebricks, or alloys, etc., the use of an explosive mixture blown into and burning in a close chamber is invaluable, and the ease and certainty with which any temperature may be obtained has led to great discoveries, and the revolutionizing of many commercial processes.
To return to the bricks in the London market: we have firebricks made of fireclay, and almost vitrified and capable of standing intense heat. These are used for lining furnaces, ovens, flues, etc. Then we have almost, if not quite, as refractory a material in Staffordshire blue bricks, used in various forms for paving channels, jambs of archways, etc.
Under ordinary circumstances I should have been afraid that such a supper would cause me to be more eager for change and movement during the ensuing six hours than for sleep; but I felt that to-night it would take a dozen half-baked firebricks to keep me awake five seconds after I had got my head on the pillow or what they call a pillow in Germany; and so, without hesitation, I made a very satisfactory meal.
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