92 Of tlte Management of Fire 



tion of fuel so much greater than I expected ; and as 

 there was another brewhouse in the neighbourhood be- 

 longing to the Elector, which, luckily for me, stood in 

 need of a new boiler, I availed myself of that oppor- 

 tunity to make an experiment, which not only decided 

 the point in question, but also established a new fact 

 with regard to heat, which I conceive to be of consid- 

 erable importance. 



Having obtained the Elector's permission to arrange 

 the second brewhouse as I should think best, I deter- 

 mined to spare no pains to render it as perfect as possi- 

 ble in all respects, and particularly in every thing relating 

 to the economy of fuel. As in brewing, in the manner 

 that business is carried on in Bavaria, where the whole 

 process, in as far as fire is employed in it, is begun and 

 finished in the course of a day, the saving of time in 

 heating the water and boiling the wort is an object of 

 almost as much importance as that of economizing fuel, 

 and consequently demanded particular attention. 



The means I used for the attainment of both these 

 objects will be evident from the following description of 

 the boiler and its fire-place, which I caused to be con- 

 structed, and which are represented in all their details 

 in the Plates III., IV., and V. 



This boiler is 12 (Bavarian) feet long, 10 feet wide, 

 and only 2 feet deep. The sheet copper of which it is 

 made is uncommonly thin for a boiler of such large 

 dimensions, being at a medium" less than one tenth of 

 an English inch in thickness. This boiler, when fin- 

 ished, weighed no more than 674 Ibs. Bavarian weight, 

 equal to 834! Ibs. avoirdupois, exclusive of 64 Ibs. of 

 copper nails used in riveting the sheets of copper 

 together. 



