35O On the- Construction of AV/< 



and 24 will give a perfect idea of the manner in which 

 these alterations were executed. 



But, when new saucepans and stewpans are con- 

 structed, I would strongly recommend the following 

 more simple and more advantageous contrivance. 



A circular rim of iron should be provided for each 

 saucepan with a handle belonging to it, of the form 

 here represented ; and, by forming the saucepan to this 



rim, its form at its brim will be circular within and with- 

 out ; and consequently the saucepan will exactly fit the 

 circular opening of its fire-place, and will at the same 

 time be exactly fitted by its circular cover. No attention 

 will in that case be necessary, in putting on the cover, to 

 place it in any particular manner or situation ; and the 

 saucepan, not being pierced with holes for rivets, will, 

 on that account, be less liable to leak, and will also be 

 more durable and more easily kept clean.* 



* One reason is obvious why stewpans without rivets should be more durable 

 than those which have their handles riveted to them ; but there is another reason 

 more occult, which requires the knowledge of a late discovery in chemistry to 

 understand. When iron and copper, in contact with each other, are placed in a 

 situation in which they are exposed to be frequently wetted, they act on each 

 other very powerfully, and one of the metals will soon be destroyed by rust. 



