The Kiln. 165 



one, they should be protected from both sun and 

 wind. When half dry each should be taken* up, 

 and any dirt or pebbles adhering to it scraped off, 

 after which it should be again laid down, but this, 

 time upon the reverse side. 



For burning the bricks a square piece of ground 

 should be levelled, the bricks being laid on their 

 flat sides in rows two deep, a space of one brick 

 between each. This space must be filled up with 

 firewood, with which the bricks themselves should 

 also be covered to the depth of six inches ; others 

 must now be placed transversely in double layers 

 as before, the spaces left being again filled up and 

 covered with firewood ; next, two courses of bricks 

 must be ranged on their narrow edges, and above 

 them nine inches of firewood. The clump may be 

 raised in this manner to a height of six or eight 

 feet, an extra layer of firewood one foot thick being 

 allowed for every four layers of bricks, and a wall 

 of unburnt bricks, cemented together with mud, 

 being built round as the clump rises, to prevent 

 the bricks from falling out as the wood is 

 consumed. When all these arrangements have 

 been completed, the wood may be lighted on 

 the windward side, and (the top and sides being 

 well sealed up with wet clay,) the whole mass left 

 to burn itself out. A large clump of say 100,000 

 bricks will take a week to burn, but a smaller one 



