206 Account of Heating Stoves by means of Hot Water. 



the reservoir, and as it cools, returning back to the boiler 

 through the under pipes. I have repeatedly, after the water 

 has been heated, immersed a thermometer in the reservoirs 

 at the ends of the house, and have only found a difference of 

 three or four degrees between that and the water in the 

 boiler. It is not necessary to make the water boil ; and if the 

 fire is judiciously managed no steam will be raised, and no 

 water wasted. It is however necessary to examine the boiler 

 occasionally, and to add water when any has evaporated. 



In Mr. Bacon's two pine pits, a fire-place with a boiler 

 over it is placed between them. They are each thirty feet 

 long and ten feet wide. The western pit is heated by hot- 

 water pipes, the eastern one by a common flue, heated by 

 the same fire after it has passed under the boiler. During 

 the severe nights of last winter thermometers were suspended 

 in these pits, and examined every morning when the pits 

 were uncovered; that heated by hot- water was invariably 

 from seven to nine degrees higher than that in the flued pit. 

 It appears that the heat lost from the fire after it has passed 

 under the boiler, is only trifling ; and if the pits were to be 

 constructed again, I would put water-pipes in both of 

 them, omitting the flue, and allowing the smoke to pass 

 immediately to a chimney after leaving the boiler, and I 

 have no doubt but the same boiler would be sufficient for 

 both pits. 



Valves might be fixed in the boiler, pipes, and reservoirs, 

 for letting steam into the house, if required ; but that would 

 induce the necessity of boiling the water ; and it has not 

 been done here, as I find I can produce all the steam I 



