and the Economy of Fuel. 1 39 



that very trifling one, which surely does not deserve 

 to be mentioned, the increase of labour attending the 

 removal of the ashes ; but the inconvenience would be 

 very considerable which would unavoidably attend the 

 discontinuation or breaking off of the steps round the 

 hither end or front of the boiler, which would be neces- 

 sary in order to be able to place the ash-pit door directly 

 under the fire-place door, and to make a way to ap- 

 proach it. 



The flues under the principal boiler of the laundry 

 in the house of the Dublin Society are not contrived 

 so as to divide the flame and cause it to circulate in two 

 currents. They run from side to side under it : the door 

 of the fire-place is not in the middle, but on one side 

 of the boiler, and near one end of it. The flame, pass- 

 ing and returning under the boiler twice from its front 

 to its opposite side, goes off at its end (that farthest from 

 the fire-place) into a canal furnished with a damper, 

 which canal, rising upw'ard at an angle of about 45 

 degrees, leads to the flues under the second boiler. 

 The bottom of the flues of the principal boiler are just 

 on a level with the pavement of the wash-house ; and 

 in order that they may easily be cleaned out, and the 

 bottom of the boiler scrubbed with a broom to free it 

 from soot, the ends of the flues are, in building the 

 fire-place, left open, and afterwards, when the boiler is 

 set, they are closed by temporary (double) walls of dry 

 bricks. To make these walls tight, the joinings of 

 the bricks are plastered on the outside with moist 

 clay. 



The sides of the boilers are defended from the cold 

 air by thin walls of bricks covered with wainscot, and 

 by filling the space between these walls and the boiler 



