194 On the Construction of Kitchen 



smoke into the chimney, which canal should be furnished 

 with a damper. By means of this damper and of the ash- 

 pit door register, the rapidity of the combustion of the 

 fuel in the fire-place, and consequently the rapidity of 

 the generation of the heat, may be regulated at pleasure. 

 The economy of fuel will depend principally on the 

 proper management of these two registers. 



i)dly, In the fire-places for all boilers and stewpans which 

 are more than 8 or 10 inches in diameter, or which are 

 too large to be easily removed with their contents with 

 the strength of one hand, a horizontal opening just above 

 the level of the grate must be made for introducing the 

 fuel into the fire-place, which opening must be nicely 

 closed by a fit stopper or by a double door. In the fire- 

 places which are constructed for smaller stewpans this 

 opening may be omitted, and the fuel may be introduced 

 through the same opening into which the stewpan is 

 fitted, by removing the stewpan occasionally for a mo- 

 ment for that purpose. 



Afthly, All portable boilers and stewpans, and especially 

 such as must often be removed from their fire-places, 

 should be circular, and they should be suspended in their 

 fire-places by their circular rims ; but the best form for 

 all fixed boilers, and especially such as are very large, is 

 that of an oblong square, and all boilers, great and small, 

 should rather be broad and shallow than narrow and 

 deep. 



A circular form is best for portable boilers, on account 

 of the facility of fitting them to their fire-places ; and an 

 oblong square form is best for large fixed boilers, on 

 account of the facility of constructing and repairing the 

 straight horizontal flues under them and round them, in 

 which the flame and smoke by which they are heated 

 are made to circulate. 



