and the Economy of Fuel. 



73 



The result of this interesting experiment was as fol- 

 lows : 



Quantity of wood consumed in cooking 

 Ibs. Bavarian weight of peas-soup . . 



Experiment 

 No. 7. 



In the boiler 

 No. i. 



37 



Experiment 

 No.%. 



In the boiler 



_ No. 8, 

 with the im- 

 proved fire- 

 place. 



14 Ibs. 



These experiments were made on the yth of Novem- 

 ber, 1 794. On repeating them the next day with pine- 

 wood, which had not been previously dried in an oven, 

 the result was as follows : 



Experiments Nos. 9 and 10. 



Quantity of wood consumed in cooking 

 89 Ibs. of peas-soup 



Experiment 

 No. 9. 



In the Boiler 

 No. i. 



39 



Experiment 

 No. 10. 



In the Boiler 



_ No. 8, 

 with the im- 

 proved Fire- 

 place. 



16 Ibs. 



The first remark I shall make on the results of these 

 experiments is the proof they afford,- by comparing them 

 with that which preceded them (No. 6), of the important 

 fact that pine-wood affords more heat in its combustion 

 than beech. This fact is the more extraordinary, as it 

 is directly contrary to the opinion generally entertained 

 on that subject ; and it is the more important, as the price 

 of pine-wood is in most places only about half as high 



