THE MUSHROOM-HOUSE. 7 



A shed of this description is an indispensable adjunct 

 to every well-ordered garden, and in the present case it 

 serves as a roof to the mushroom-house. In the centre 

 of each vault, shown in fig. 7, a circular ventilator, d } 

 9 in. in diameter, should be made, having a stone and cast- 

 iron stopper, with a folding ring. The whole roof of the 



Fig. 7. Mushroom -house under shed. 



mushroom-house is covered over with pavement, which 

 at the same time forms the floor of the shed above. 

 Mr. Forsyth objects to cast-iron shelves " on account of 

 the rust, and to slate shelves, as being cold and damp, 

 and therefore not suitable to the purpose -" but he knows 

 of no objection to shelves built of bricks and mortar, 

 kerbcd with hewn stone 3 in. wide, and clamped together 

 with lead. 



