SPAWN-MAKING 



sumed that they found a practicable method 

 of stimulating spore germination, but even 

 this is not certain. At any rate their method 

 of making spawn found practical applica- 

 tion for a time in a department of the Pas- 

 teur Institute, and recently it appears to have 

 been taken over by a corporation in Paris in- 

 terested in mushroom grov^ing. By the 

 process mentioned the spore culture tubes of 

 spawn are grown and sold to growers who 

 are expected to multiply the volume of the 

 product by preparing beds which yield the 

 crop spawn required. The grower who so 

 desires, therefore, purchases spore cultures 

 and makes his own general supply of spawn. 

 This method with tissue cultures may also 

 develop in the United States in time. 



Another secret method of effecting spore 

 germination has been referred to by Repin 

 in a circular on the subject, and his method 

 appears to have been practically applied in 

 the making of "plate" spawn by one of the 

 large seed firms of Paris. As far as can be 

 ascertained, this spawn has not come into 



105 



