and the Economy of Fuel. 121 



I have thought myself authorized to draw from them ; 

 and as these investigations have frequently led me into 

 abstruse philosophical idisquisitions, which might not 

 perhaps be very interesting to many of my readers, to 

 whom a simple account of my fire-places, with 'direc- 

 tions for constructing them, might be' really useful ; in 

 order to accommodate readers of all descriptions, I have 

 thought it best to divide my subject, and to reserve what 

 I have still to say on the mechanical part of it the 

 construction of kitchen fire-places for a separate 

 Essay. In the mean time, for the information of those 

 who may have opportunities of examining any of the 

 kitchens or fire-places, for other purposes, which have 

 already been constructed on my principles, under my 

 direction, I have annexed the following account of 

 them, and of the particular merits and imperfections 

 of each of them. This account, added to what has 

 been said in the foregoing chapters of this Essay on 

 the construction of fire-places, will, I flatter myself, be 

 found sufficient to convey the fullest information re- 

 specting the subject under consideration, and enable 

 those who may wish to adopt the proposed improve- 

 ments to construct fire-places of all kinds on the prin- 

 ciples recommended, without any farther assistance. 



Those who may not have leisure to enter into these 

 scientific investigations, and who, notwithstanding, may 

 wish to imitate these inventions, will find all the infor- 

 mation they can want in my next Essay. 



An Account of the Kitchen of the House of Industry 

 at Munich, in its present State. 



The large circular copper boiler (which is situated in 

 a small room adjoining to the great kitchen) is fitted 



