Economy of Fuel. 327 



U, is an urn with a spigot, and a pipe on the opposite side leading 

 with a gradual descent ohiiquely into the fire through an aperture in 

 the plate of the stove. 



B, is a similar aperture to receive the pipe from a boiler in the 

 same manner as at that attached to the urn. 



P, is the gas pipe six or eight inches in diameter, of which the 

 various directions within the canvass are indicated by dotted lines. 



I, is a piece of sheet iron, six inches broad, extending across the 

 top and down the sides of the stove in front serving for an attachment 

 to the cloth, and sufficiently insulating it from the hot metal. The 

 front of the stove thus constitutes a part of the circular enclosure. 



F, is a pipe which may be opened or closed at pleasure for con- 

 veying to the chimney any fumes which may chance to escape into 

 the kitchen. 



T, is a wooden trunk, beneath the floor, for conveying pure air to 

 the exterior of the furnace. 



w, its aperture within the air chamber. 



h, A, are light iron hoops within the canvass covering to keep it ex- 

 tended, and prevent contact with the pipe, P. 



IV, is a wire netting, covering the aperture in the parlor floor, and 

 resting on the edges of a few thin iron bars, seen in the section. 

 The netting is painted in colors and figures precisely corresponding 

 with those of the carpet, so that the eye of a stranger seldom de- 

 tects the source of heat unless he happen to pass over the aperture. 



The canvass is rendered incombustible by any heat which can be 

 radiated from the stove, first, by dipping it in a strong solution of 

 alum, and afterwards by covering both surfaces with a coat of white- 

 wash, composed of eight parts of quick lime to one of common salt. 

 The same covering has been three years in use without the slightest 

 sign of combustion. The whole apparatus may have cost, in ad- 

 dition to the price of the cooking stove, about five dollars. It can be 

 put up or taken down in an hour, and at the approach of warm weath- 

 er, when heat is no longer wanted for the other apartments, the aper- 

 ture in the floor is closed, the canvass detached, the grate and base 

 of the stove removed to an ordinary kitchen fire-place ; and with 

 proper supports for boilers and other apparatus, a summer cooking 

 range is at once constructed out of the materials which had been 

 used in the winter, and thus no change of fuel becomes necessary at 

 that season. With a gas pipe of sufficient dimensions to convey 

 away the fumes, little annoyance can arise from that quarter. To 



