304 On the Construction of Kitchen 



the manner here described, viz., of two sheets of iron, 

 with confined air between them ; or perhaps it may 

 be still better to fill this cavity with finely pulverized 

 charcoal. The additional expense of constructing the 

 shelves of roasters in this manner would be but trifling ; 

 and the passage of the heat through them, which it is 

 always desirable to prevent as much as possible, will, by 

 this simple contrivance, be greatly obstructed. If the 

 lower shelf be so constructed, it will no doubt be found 

 very useful in preventing the too quick evaporation of 

 the water in the dripping-pan. 



Of various Alterations that have been made in the 

 Forms of Roasters, and of the Advantages and Dis- 

 advantages of each of them. 



The blowpipes of all the roasters that were con- 

 structed, till very lately, were made to pass round to 



Fig. 19. 



the farther end of the roaster; and, after forming 

 two right angles each, they entered the roaster, in a 

 horizontal direction, just above the level of the brim 



