PROPAGATING HOUSE. 47 



A SINGLE-ROOFED HOUSE. 



single roof or lean-to houses are usually preferred 

 by f/ropagators in the more northern States, as they are 

 ess exposed to cold, being often built against a side4hill or 

 building ; where such a protection is not convenient, 

 then a wall is built running east and west, or nearly so, 

 and the roof is placed against this, sloping to the soijth. 



Fig. 13 shows a lean-to house, with interior arrange- 

 mentfc similar to that of the span-roofed house. The fur- 

 nace and general store-room is built against the nortti side, 

 instead of at the end. This not only affords a protection to 

 the wall, but gives a good-sized room for storing the( com- 

 post, feand, etc. Four hot-water pipes pass the whole 

 length! of the house, as shown. The boiler and furnai 5e are 



set in ^he room back of the wall, and the pipes pass th 

 it intoUhe house. The chimney may be built in th 

 or be carried up by its side. When brick or tile are 



ongh 

 wall 

 used 



for fluas, then a brick furnace is made in the wal, the 

 greater part of it within the house ; but the door snould 

 open oi] tside, so that when opened the gas from the fire 

 may esc ipe into the furnace room. The furnace shoujld be 

 placed s ) low that the flue may gradually rise from] it to 



the poiii 



111 not 



come too near the bottom of the cutting frames. If the 

 furnace is placed with its top level with the surface of the 

 ground within the house, and the flue be made to rise one 

 foot, rather abruptly, as it leaves the furnace, it may then 

 be carried fifty feet with not more than six inches rise, 

 and still it will have sufficient draft. If the house is fifty 

 feet long, the flue should pass under the frames at the 

 front, and return under those at the back, the chimney 

 being near the furnace. 



The point where it enters the chimney should be at least 

 eighteen inches above the top of the furnace. Of course, 



