536 



Account of Experiments 



Quantity of Fuel consumed in these Experiments. 



In heating the oven first time 



second time .... 

 third time .... 

 fourth time .... 



fifth time 



sixth time .... 



Total .... 



Employed in keeping up a small fire near 

 the mouth of the oven while the bread 

 was putting into it 



Total consumption of wood in the six 

 experiments 



Dry pine-wood. 



)bs. loths. 



366 1 6 



134 16 



100 O 



90 o 



80 o 



74 16 



845 1 6 



34 16 



880 



The results of these experiments show, in a striking 

 manner, how important it is to the saving of fuel in 

 baking bread to keep the oven continually going, 

 without ever letting it cool ; for in the first experi- 

 ment, when the oven was cold, when it was begun to 

 be heated the quantity of wood required to heat it was 

 366! Ibs. ; but in the sixth experiment, after the oven 

 had been well warmed in the preceding experiments, 

 the quantity of fuel required was only 74^ Ibs. 



As in these experiments 2393 Ibs. 13 loths of bread 

 were baked with the heat generated in the combustion 

 of 880 Ibs. of wood, this gives to each pound of bread 

 1 \\ loths, or || of a pound of wood. 



In the fifth experiment or batch, 186 loaves weigh- 

 ing (at 2 Ibs. 52 loths each) 304 Ibs. were baked, and 

 only 80 Ibs. of wood consumed, which gives but a trifle 

 more than \ of a pound of wood to each pound of bread, 

 or i Ib. of wood to 4 Ibs. of bread. 



As each loaf weighed 2 Ibs. 16 loths when it was put 



