J36 CARBONIZATION OF TURF. 



Opening for a hook, and closed with a proper lute. To all these must 



tobTchmd. be added > that lhe P art of the furnace > through which the 

 substance to be charred is introduced, should be made only 

 of dry bricks, and covered with wet clay. 

 Position of the Whatever be the form or material of the thermolamp, it 

 apparatus. ought always to be placed horizontally in the furnace, and 

 have its extremities resting on the side walls. In this situ- 

 ation the bottom and circumference will receive the action 

 of the fire, which must be fed with the bad turf, as I have 

 mentioned, assisted by the gas from the lateral tubes. 

 Bar for secu- T° a 'l this must be added a bar of iron, in the direction 

 rit y- of the width of the apparatus, to prevent it from giving" 



way when loaded, and long exposed to heat. 

 Turf dried by ■"■ navc turned the heat arising from the smoke to great 

 the heat of the advantage, by constructing a kind of stove, to prepare the 

 turf for the charring apparatus. The most suitable means 

 for this drying process, particularly in winter, may readily 

 be conceived. 

 S'xt nds ^ n *° an a PP aratuS disposed as I have described, I put 

 of wood char upward of sixty pounds of dry wood, that I might form 

 an accurate idea of its advantages; and the following were 

 the results. 

 Results of the After having commenced the extrication of the gasses 

 process. with turf of good quality, acquired by pressure, they 



burned with vehemence, and at the expiration of an hour 

 furnished such a quantity of radiant heat, that the tubes 

 alone, without any addition of fuel, were capable of con- 

 tinuing the operation, affording in the conclusion a perfectly 

 homogeneous charcoal ; and I confess, that I never saw 

 what appeared to me a more beautiful sight. How indeed 

 can we behold without admiration a combustible burning 

 itself, and thus saving half the fuel, that would have be*i 

 required to convert it into charcoal? 

 Domestic use I must not here omit to speak of the use of pressed turf 

 of pressed turf. f or domestic purposes. For instance, I have found by ex- 

 perience, that turf of a good quality, after having been 

 pressed and well dried, produced heat in the following pro- 

 portions. 

 Compared with Five or six parts of turf are equal to four of wood, sup- 

 wood, posing the fireplace to be extremely accessible to air. There 



is 



