142 



AN EGG FARM. 



building is divided by wire partitions. The glazed roof 

 is upon the south side. There is an outside door (not 

 shown in the figure) in the north wall, opposite the 



FIG. 47. GROUND PLAN. 



chimney, for convenience in attending the fire. The 

 building is warmed by coal, a fire-chamber of brick and 

 a boiler and hot-water pipes being used. 



It is injurious to animals to breathe the fumes that 

 will escape when it is attempted to warm a room by 

 passing a smoke-pipe through it, leading from a coal 

 fire, unless the chimney is quite high, causing a strong 

 draft, which is one reason for preferring hot water, and 

 another is that the risk of overheating is not so great 

 (for water cannot be heated above a certain temperature 

 without turning to vapor or steam), and a third reason 

 is that less fuel is needed with hot water than without. 

 The original cost of hot-water fixtures is double, it is 

 true, but they are kept in repair with hardly the expense 

 of a cent, and cause a saving of fully half the fuel. The 

 ventilator at the top of the building has immovable 

 blinds at its sides, and horizontal doors at its bottom, 

 opening upwards, and closing by their own weight, 



