Fire-places and Kitchen Utensils. 395 



boiler or stewpan, a, e,f, d (which is distinguished by 

 dotted lines), is made to pass with so much difficulty as 

 to require a considerable force to bring it into its place, 

 and not to be in danger of being separated from it by 

 any accidental blow. The handle, g, is riveted to the 

 cylinder previously to its. being united to its stewpan. 



It having been found that this cylinder was liable to 

 become very hot, and even to be destroyed by the heat 

 in a short time if care was not taken to keep the fire 

 low ; and it having likewise been found that the heat 

 that made its way upwards, between the outside of 

 the stewpan and the inside of the cylinder, frequently 

 heated the upper part of the stewpan so intensely hot 

 as to cause the victuals cooked in it to be burned to 

 the sides of the stewpan, especially when the stewpan 

 was almost empty, with a view to remedy both these 

 evils, and at the same time to construct stewpans and 

 saucepans of large dimensions of common sheet tin 

 (tinned iron) which should be more durable, and supe- 

 rior in many respects to those of that material now 

 in common use, some alterations were made in this 

 utensil, which will be easily understood by the help of 

 the following figure : 



In order to prevent the flame from passing upwards 

 between the saucepan and its cylinder, and occupying 



