Fire-places and Kitchen Utensils. 413 



of ascertaining the fact by the test of actual experi- 

 ment 



As the subject strikes me as being of no small degree 

 of importance, I shall make no apology for enlarging 

 on it, and giving the most particular account of several 

 kinds of portable kitchen furnaces. 



That just described (of cast iron) is, it is true, as per- 

 fect in all respects as I have been able to make it, and 

 will probably be found to be quite as economical and as 

 useful as any that I shall describe ; but cast iron is not 

 everywhere to be found, and, even where foundries are 

 established for casting it, moulds must be provided, and 

 these are expensive, and not easy to be had. As it is 

 probable that some persons may be desirous of being 

 provided with portable furnaces of this kind, who may 

 not have it in their power to procure them of cast iron, 

 I shall now show how they may be constructed (by any 

 common workman) of sheet iron, and also how they 

 may be made of earthen-ware. 



Of small portable Kitchen Furnaces constructed of 



sheet Iron. 



The following figure represents a vertical section of 

 one of these furnaces, drawn to a scale of 6 inches to 

 the inch. 



The construction of this furnace will be easily under- 

 stood from this figure. The circular hollow horizontal 

 rim, a, b, which I shall call the sand-rim, is 8^5- inches 

 in diameter within, and 1 2^% inches in diameter with- 

 out. Its width at its bottom, which is flat, is just 

 i inch. Its sides are sloping and of different heights : 

 that which is towards the centre of the furnace is of 



