GBOWIKG MUSHROOMS IS MUSHROOM HOUSES. 35 



of the house. At the same time, do not lose sight of 

 convenience in handling the manure, either in bringing 

 it into the house or taking it out, and with this in view 

 it may be necessary to have a door opening to the out- 

 side. All outside doors should be double and securely 

 packed around in winter. Side window ventilators are 

 not necessary, at the same time they are useful in the 

 early part of the season and in summer time; they 

 should be double and tightly packed in winter. The 

 walls, if made of brick, should be hollow, if of wood, 

 double; indeed, walls built as if for an ice house are 

 the very best for a mushroom house, and should be 

 banked with earth, tree leaves, or strawy manure in 

 winter, to help keep the interior of the house a little 

 warmer. 



The floor should be perfectly dry ; that is, so well 

 drained that water will not stand upon it, but it is 



Fig. 8. Section of Mrs. C. J. obborne's mushroom House. 



immaterial whether the floor is an ordinary earthen one 

 or of wood or cement. 



The roof should be double and always sloping, — never 

 flat. The hoar frost that appears in severe weather 

 inside a single roof is likely to melt as the heat of the 



