326 



FORCING GARDEN. 



Fig. 36. 



a, Hot- water apparatus in the vinery. 



b, Boiler for the vinery. 



c, Boiler for the hot- water apparatus of the mushroom-house. 



d, Pit below the passage of the mushroom-house for forcing rhubarb, 



kale, Ac. 

 , Ventilators for the vinery. 



