THE MUSHROOM-HOUSE. 11 



middle of the house, at 6 feet distance from each other, 

 with slides, s, under them, to admit and take off air 

 when necessary. This being done, erect two single- 

 brick walls, v v, each five bricks high, at the distance of 

 3-| feet from tLe outside walls, to hold up the sides of 

 the lower beds, a a, and form one side of the air- 

 flue, tutu, leaving 3 feet up the middle, t x t, of 

 the house for the floor. Upon these walls, v v, lay 

 planks, t u, 44 inches wide and 3 inches thick, in which 

 to mortise the standards, t k, which support the shelves. 

 These standards should be 3^ inches square, and placed 

 4 feet 6 inches asunder, and fastened at the top to the 

 ceiling joists. When the standards are set up, fix the cross- 

 bearers, i n i n, that are to support the shelves, o 0, 

 mortising one end of each into the standards, n, the other 

 into the walls, i. The first set of bearers should be 2 feet 

 from the floor, and each succeeding set 2 feet from that 

 below it. Having thus fixed the uprights, t k, and bearers, 

 i n, at such a height as the building will admit, proceed 

 to form the shelves, o o, with boards 1J inches thick, ob- 

 serving to place a board, d d, 8 inches broad and i 

 inch thick, in the front of each shelf, to support the front 

 of the beds. I asten this board on the outside standards; 

 that the width of the beds may not be diminished. 

 The shelves being completed, the next thing to be done is 

 he construction of the flue (p in section), which should 

 xnnmence at the end of the house next to the door, run 



