284 THE FARME1. AT HOME. 



with a progressive increase of capacity. It can be placed and used 

 in the open air, or in any enclosed room where the smoke can be con- 

 veyed to a chimney through a common stove pipe. It is also well 

 adapted to the various household purposes where a large quantity of 

 water is to be heated. The cooking is effected with great rapidity, 

 and requires only a small amount of fuel. The apparatus consists of 

 two kettles, one within the other, and united at the top. The dimen- 

 sion of the inner one is so much less than of the outer one as to leave 

 a space all round between them from one to three inches, according to 

 the size of the kettle. The outside kettle is so connected with the 

 furnace at the bottom which receives the fuel, that the heat rises into, 

 and circulates in every part of the space between the kettles. No 



MOTT'S AGRICULTURAL FURNACE. 



heat, therefore, passes off in the flue, or by mixing with the sur- 

 rounding air, till it has been brought in contact with, and expended 

 upon the surface, which encloses the substances to be affected by it. 

 Our own, which holds thirty gallons, can make water boil in less than 

 half an hour ; and then the merest trifle of fuel is wanted to keep up 

 the temperature and to complete the process of cooking. We have 

 had it in use from three to four years ; and, so great is our confidence 

 in the economy of cooking food for stock, and in the adaptation of this 

 furnace for the purpose, that we considered the value of it to us the 

 first winter was more than an equivalent for its cost, which was fifteen 

 dollars. To others of more extensive farming operations the impor- 

 tance of its use would be greatly augmented. 



