Fire-places and Kitchen Utensils. 3 1 1 



vapour are driven out of the oven, by the blast of hot 

 air from the air-chamber. 



The cylinder which constitutes the body of the oven 

 is two feet long, and is supposed to be of cast iron. It 

 is cast with a flange, which projects outwards about one 

 inch at the opening of the cylinder, by means of which 

 flange it is attached, by rivets, to the front of the oven, 

 which, as I have already observed, must be made of 

 strong sheet iron, which may be near one eighth of 

 an inch in thickness. 



Fig. 22. 



As the shelf is not attached to the sides of the oven, 

 but to its front, the body of the oven need not be per- 

 forated, except in one place, namely, where the steam 

 goes off; and as the bottom or farther end of the 

 cylinder, and the flange at its hither end, and the 

 cylinder itself, are all cast at the same time, and as 

 the form of the oven is such as will deliver well from 

 the mould, it appears to me that the article might be 

 afforded at a low price, especially in this country, where 

 the art of casting in iron is carried to so high a pitch of 

 perfection. 



