420 



SUCCESSFUL FARMING 



lessens evaporation and prevents burning during the secondary heating. 

 When filled the house is closed, and in a day or two the temperature rises, 

 sometimes to 120° F., then slowly drops to normal. One ton of manure will 

 fill approximately 65 square feet of bed 8 inches deep. 



Spawning. — Only the best American brick spawn should be used. 



A Typical Range of Mushroom Houses. 



Of the several varieties, the White and Cream are most desirable; white is 

 more salable, cream more prolific and hardy. Spawning should begin when 

 the temperature of the beds has dropped go 70° F. The bricks should be 

 broken into eight or ten pieces 1^ to 2 inches square and placed evenly on 



Siftixg the Casing Dirt. 



the beds. The pieces should then be inserted vertically one inch below the 

 surface of the manure. After spawning, the beds should be firmed again. 

 Spawn should be kept in a cool, dry place. One brick costs from 

 twelve to fifteen cents and will plant 8 square feet of bed. 



