448 On tJu Construction of Kitchen 



under the bottom of the boiler quite as effectually as if 

 the boiler were suspended in a cylinder. 



It can hardly be necessary that I should observe 

 here what would probably occur to the reader with- 

 out my mentioning it that stewpans and saucepans 

 for register-stoves, and for portable furnaces of all kinds 

 with steam-rims, might be constructed on this simple 

 principle. 



It is on this principle that the tea-kettles are con- 

 structed that were recommended in the last chapter. 



I shall finish this chapter by a few observations 

 respecting the means that may be used for combining 

 the method of cooking here recommended for poor 

 families, with the warming of their habitations in cold 

 weather. This can most readily be done by using an 

 inverted, tall, hollow, cylindrical vessel of tin, thin sheet 

 iron, or sheet copper, as a cover to the boiler (or to 

 the steam-dish, when that is used). 



This will change the whole apparatus into a steam- 

 stove, which, as I have elsewhere shown, is one of the 

 best kinds of stoves that can be used for warming a 

 room. 



Whenever this is done, care must be taken to stop up 

 the chimney fire-place with a chimney-board, otherwise 

 all the air warmed by the stove, and rendered lighter 

 than the external air, will find its way up the chimney, 

 and escape out of the room. A small opening must, 

 however, be left for the tube which carries off the smoke 

 from the portable furnace into the chimney. 



But, whenever it is intended that a portable kitchen 

 furnace should be used occasionally for warming a room 

 by means of steam, it will be very advisable to construct 

 the furnace with an opening on one side of it, for the 



