REMARKS ON THE ARNOTT STOVE. 9 



through the valuable improvements for the regulation of fire-heat, 

 so generously and disinterestedly contributed for the public benefit 

 by the able and scientific inventor of the stove, Dr. Arnott, I beg 

 to submit my experience thereon for the information of your in- 

 quiring correspondent and general readers. 



It is to be borne in mind, that although Dr. Arnott suggests various 

 plans for stoves, yet it is not simply the form thereof, but the dis- 

 covery of the grand principle of regulating heat by admitting only 

 sufficient air to feed the required combustion, for which the public 

 are so much indebted to him. Various forms of stoves are protected 

 by patent, but are all based upon this leading feature, which no 

 patent can now shackle, and may be adopted by any one. I mention 

 this to show that we are not compelled to purchase a patent stove if 

 we wish to have the advantage of the principle applied to a green- 

 house, where those of iron only, are objectionable, not only from their 

 speedy destruction by corrosion in a damp atmosphere, but also for 

 the simple reason, that however beautiful and perfect their construc- 

 tion may be, yet improper fuel and inexperienced management may 

 cause the fire to be extinguished in the middle of a severely frosty 

 night, (as was the case with "A. B. C.,") when, by the ready de- 

 parture of heat from a thin case of metal, the consequence may be, 

 the destruction of many valuable plants. 



The plan I adopted last winter was, to build the stove itself of brick 

 within the house, midway against the back wall, and the effect is, that 

 should the fuel be all consumed before attention can be given in the 

 morning, (which from the slow combustion, is very rarely the case), 

 the heat retained in the brickwork is sufficient to keep out frost for 

 several hours. I found, on one occasion, on making up the fire the 

 last thing at night, (noting the time,) and without doing anything 

 more whatever to the stove, that it retained heat through the brick- 

 work for fifteen hours ! 



It is constructed thus : — the bottom part of brick, and all the top 

 or upper part of fire-lumps, which are of the temper of fire-brick, 

 and used, I believe, generally for the bottoms of ovens; the advantage 

 of the latter is, that they are easily secured with small iron cramps, a 

 necessary plan, otherwise the expansion from the heat will loosen the 

 work and produce crevices, which would be injurious to the perfect 

 action of the stove. Lime mortar or Roman cement is useless, as it 



