and the Economy of fuel. 141 



the great kitchen in the House of Industry at Dublin, 

 as the expense of fuel is very considerable in that ex- 

 tensive establishment, where more than 1500 persons 

 are fed daily, at an average ; but, not having time to 

 finish so considerable an undertaking, I thought it most 

 prudent not to begin it. I fitted up one large boiler as 

 a model at one end of one of the working-halls ; but 

 this was designed principally to show how a large hall 

 might be heated from a kitchen fire-place, and from the 

 very same fire which is used for cooking.* The smoke 

 from the fire-place is carried along horizontally on one 

 side of the hall from one end of it to the other ; and 

 the boiler being closed by a cover which is steam-tight, 

 the steam from the boiler is also forced along from one 

 end of the hall to the other, in a horizontal leaden 

 pipe, which runs parallel to the flue occupied by the 

 smoke, and lies immediately over it. In warm weather, 

 when the hall does not require to be heated, the smoke 

 and steam go off immediately into the atmosphere by 

 a chimney adjoining the fire-place, without passing 

 through the hall. 



To be able to equalize the heat in the hall (which is 

 very long and narrow), or to render it as warm at the 

 end of it which is farthest from the fire-place as at that 

 next the fire, I directed clothing for the steam tube of 

 warm blanketing to be made in lengths of three or four 

 feet, to be occasionally put round it and fastened by 

 buttons. 



By clothing or covering the steam tube more or less, 

 as may be found necessary in those parts of the hall 



* This contrivance might easily be applied to the heating of hothouses, 

 even though the hothouse should happen to be situated at a considerable dis- 

 tance from the kitchen. 



