Fire-places and Kitchen Utensils. 287 



altogether, and to put a final stop to their introduction 

 in this country. The circumstance upon which the 

 principal merit of the roaster depends, and on which 

 the excellence of the food cooked in it depends entirely, 

 is the equality of the heat. When the heat is equal on 

 every side, it may be more moderate than when it is 

 unequal ; and the more moderate and equal the heat is 

 by which meat can be properly roasted, the better tasted 



Fig. 17. 



and more wholesome will it be. Now it is quite impos- 

 sible to keep up an equal heat in a roaster which is 

 closed only by a single door of sheet iron ; for so much 

 heat will pass off through such a thin metallic door, 

 and be carried away by the cold air of the atmosphere 

 which is lying against the outside of it, that the degrees 

 of heat in different parts of the roaster must necessarily 



