Description of a Stove. 
105 
No. 14. 
Description of a Stove on the Principles of the Swedish 
Fire-place , with Head-openings , by Citizen Guyton.^ 
The true principles of constructing fire-places, so as 
to obtain the greatest heat with the least consumption of 
fuel, have been known for some time in France ; but they 
have been much less generally adopted, than the necessi- 
ty for economising fuel demands. We see many fire- 
places so deep as to consume double the quantity of fuel 
necessary, and yet heat the apartment but faintly, where 
half the expense might be spared by altering the fire- 
place according to Count Kumford’s plan. 
If a chimney smoke, instead of reducing the tunnel to 
proper dimensions, so that descending currents cannot 
take place in it, scarcely any remedy is thought of but 
air-holes, which require the sacrifice of a certain quantity 
of fuel, to counterbalance the effect of the cold air conti- 
nually entering. 
The use of the Swedish stoves is probably yet rare, 
from their not having been constructed on just principles, 
or in the best proportions, at their first introduction. As 
I have had one made, which appears to many of my 
friends to produce an astonishing effect, in compliance 
with their request I shall give an exact description of it, 
premising however a few principles with regard to fires. 
1 . The heat produced is proportionate only to the air 
consumed by the fuel. 
3. The quantity of heat produced by a given quantity 
of fuel is greatest when the combustion is most complete* 
3. The combustion is most complete when the fuligi- 
* Nichol,, vol. 2. p. 24. Abridged from An. de Chim. vol. 41. p, 79 
VOL, I. O 
