414 On the Construction of Kitchen 



an inch high, but the side which is outwards is \ an 

 inch in height. 



The sand-rim is confined and supported in its place 

 by being fastened, by means of rivets or otherwise, to 

 an inverted hollow truncated cone, c, d, e, /, which 

 forms the upper part of the body of the furnace. This 

 inverted cone, which is turned over a strong circular 

 iron wire at its upper edge, c, d, is 1 2^5- inches in diam- 



eter above measured within the wire, and 5^ inches 

 in height measured from c to e or from d to /, and is 

 9 1*5- inches in diameter from e to f, where it is fastened 

 to the erect hollow truncated cone, g, k, i, k. 



This last-mentioned erect cone, which is closed be- 

 low by a circular plate of sheet iron, forms the lower 

 part of the body of the furnace. It is 7 inches in diam- 

 eter above, 1 2 inches in diameter below, and its perpen- 

 dicular height is just 9 inches. Its sloping side, g, i, 

 measures about 9^5- inches. 



The fire-place of this little portable furnace is an 

 inverted hollow truncated cone, g, h, /, m, which is 

 7 inches in diameter above, at g, h, and 5! inches in 

 diameter below, at /, m; and its length is 6 inches, 



