4 1 2 On the Construction of Kitchen 



The register-stopper to the opening, K, into the ash- 

 pit, may be constructed on the same principle as that 

 of the blowpipe of a roaster. One of these stoppers is 

 represented on a large scale in the Fig. 17, at the end 

 of the second part of this (tenth) Essay ; or, what will 

 be still more simple and quite as good, the admission 

 of the air may be regulated by a register like that 

 represented in the preceding Fig. No. 61. 



This portable kitchen furnace will answer a variety 

 of useful purposes ; and, if I am not much mistaken, it 

 will come into very general use. It is cheap and durable, 

 and not liable to be broken by accidents or put out of 

 order ; and it is equally well adapted for every kind of 

 fuel. No particular care or attention is required in the 

 management of it, and it is well calculated for confining 

 heat, and directing it. 



As the fire-place belonging to this furnace is nearly 

 insulated, and as it contains but a small quantity of 

 matter to be heated, a fire is easily and expeditiously 

 kindled in it ; and the fuel burns in it under the 

 most favourable circumstance. 



It will be found extremely useful for boiling a tea- 

 kettle, especially in summer, when a fire in the grate is 

 not wanted for other purposes ; and, when the tea-kettle 

 is constructed on the principles that will presently be 

 described, a very small quantity indeed of fuel will 

 suffice. 



But the most important use to which these portable 

 furnaces can be applied is most undoubtedly for cooking 

 for poor families. I have hinted at the probable utility 

 of a contrivance of this kind in some of my former 

 publications ; but since that time I have had opportu- 

 nities of examining the subject more attentively, and 



