PROPAGATING HOUSE. 4? 



side, instead of at the end. This not only affords a pro- 

 tection to the wall, but gives a good -sized room for stor- 

 ing the compost, sand, etc. Four hot-water pipes pass 

 the whole length of the house, as shown. The boiler 

 and furnace are set in the room back of the wall, and 

 the pipes pass through it into the house. The chimney 

 may be built in the wall, or be carried up by its side. 

 When brick or tile are used for flues, then a brick fur- 

 nace is made in the wall, the greater part of it within 

 the house; but the door should open outside, so that 

 when opened the gas from the fire may escape into the 

 furnace room. The furnace should be placed so low 

 that the flue may gradually rise from it to the point 

 where it connects with the chimney, and still not come 

 too near the bottom of the cutting frames. If the fur- 

 nace 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, the more it rises the more rapidly the smoke and 

 heat will pass. The size of the furnace will depend 

 upon the size of the house, and also whether coal or 

 wood is used. 



