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perfectly with the supposition of its having been formed at 
a lower, and they at a higher, temperature. 
ON A NEW GAS STOVE. BY W. SYKES WARD, ESQ., LEEDS. 
Mr. Ward stated that in his invention the stove is con- 
structed in a vertical position, so as to expose a considerable 
surface for the absorption of heat from gas burners, and for 
the radiation of the heat; and that, from the flatness of 
construction, the apparatus occupies little space, not pro- 
jecting into the room more than two or three inches, being 
thus productive of little inconvenience when out of use. 
A plate of thin sheet iron is fitted into an ordinary fire- 
place, in the manner of a fire board, about two inches within 
the projection of the mantel-piece ; about three inches in front 
of the back plate, a similar plate of sheet iron is secured by 
bolts ; a third somewhat smaller plate of iron is placed about 
one inch from the second plate, and enclosed at the top, 
bottom, and sides, so as to form a chamber of about two to 
three feet square, and one inch in depth. Towards the 
bottom of the last plate a long aperture is cut, closed by a 
sliding plate, acting as a door for lighting the gas jets, and 
admitting a small quantity of air. A little below the aper- 
ture a pipe is introduced, in which are fixed three or more 
gas jets, either the ordinary small bat-wing burners, or 
burners with two or three holes, so that the flames may 
extend laterally, not coming into immediate contact with the 
iron. From the top of the enclosed chamber, a pipe, an 
inch and a-half in diameter, proceeds through the second 
and first plates into the chimney of the room. 
The Author found that this apparatus was sufficient to 
raise the temperature of a moderate-sized apartment from 
five to ten degrees Fahrenheit, with a consumption of about 
three feet of gas per hour, costing about twopence for ten 
