AGARICS WITH WHITE SPORES 



trated with the mycelium in about six weeks, 

 and numerous small sporophores had begun 

 to form when the experiment was lost 

 through accident. Subsequently, Mr. L. F. 

 Childers, who was assisting me in mush- 

 room growing, made a small quantity of 

 spawn of this species and prepared a bed 

 under ordinary conditions, using, however, 

 more completely fermented stable manure 

 than for Agaricus. The bed, unfortunately, 

 was made in a room in which Agaricus cam- 

 pestris would not grow on account of the 

 variable temperature. Nevertheless, in the 

 course of two months fruiting of the Tri- 

 choloma had begun on one side of the bed, 

 that farthest from the drying efifects of the 

 steam radiator, and the production of fine 

 heavy mushrooms (Plate IX, b) in the 

 small area indicated was enough to demon- 

 strate the fact that this form may be, under 

 certain conditions, a valuable plant for home 

 production. The quality of the mushrooms 

 thus grown was pronounced by some su- 

 perior to Agaricus campestris, but I cannot 



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