MUSHROOM GROWING 



slowly until the bricks are about in the con- 

 dition mentioned under the first method, 

 when they were stacked in piles in a well 

 drained, ventilated room or cellar for 

 growth. 



Whatever may be the method of spawn- 

 ing the brick, the size of the stacks made 

 will depend upon circumstances. When a 

 thorough fermentation of the manure has 

 not been given, or when relatively little 

 loam is used an after-fermentation may re- 

 sult. The bricks should then under no cir- 

 cumstances be put in large stacks. The 

 bricks are usually stored for growth at a 

 temperature about the same as that most 

 favorable in mushroom growing (Plate 

 IV\ c). They should be examined occa- 

 sionally, and the moisture relation should be 

 carefully controlled. It is desirable to have 

 the spawn grow throughout the brick, and 

 to attain this end the surface must be kept 

 slightly moist. Therefore spraying the brick 

 or the walls of the storage cellar with wa- 

 ter may be required, but extremely moist 



no 



