344 Of tf ie Use of Steam, etc. 



eter, or into several smaller tubes, constructed of very 

 thin sheet copper (or into any other metallic tubes, hav- 

 ing a large surface, that would be cheaper) ; and these 

 tubes should be placed nearly in a horizontal position 

 in the lower part of the drying-room and under the goods 

 that are to be dried; and (in order to economize the 

 heat as much as possible) the water resulting from the 

 condensation of the steam in the steam-tubes should 

 be conducted by small tubes, well covered with warm 

 covering, into the reservoir which feeds the steam- 

 boiler. 



[This paper is printed from the English edition of Rumford's Es- 

 says, Vol. III. pp. 475-498.] 



