CHAPTER III. 



GROWING MUSHROOMS IN MUSHEOOM HOUSES. 



A mushroom house is a huilding erected purposely for 

 mushroom culture. It may he wholly or partly above 

 ground, and built of wood, brick, or stone, and extend 

 to any desired dimensions. But a few general principles 

 should be home in mind. Mushrooms in houses are a 

 winter and not a summer crop, and they are impatient 

 of sudden changes of temperature and of a hot or arid 

 atmosphere. Therefore, build the houses where they 

 will be warm and well-sheltered in winter, so as to get 



Fig. 7. Mushroom Hotjse built against a Nobth-facing Wali. 



the advantage of the natural warmth, and spare the arti- 

 ficial heat. They should be entered from an adjoining 

 building, or through a porch on the south side, so as to 

 guard against cold draughts or blasts in winter wlien 

 the door would be opened in going into or coming out 



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