Cut the stem off 

 about level with the 

 gills, then lay the mush- 

 room, spore - surface 

 downward, upon the paper, and cover with a tum- 

 bler, finger-bowl, or other vessel with a smooth, 

 even rim, to absolutely exclude the slightest in- 

 gress of air. 



After a few hours have passed by, perhaps even 

 less, the spores will be seen through the glass on 

 the paper at the extreme edge of the mushroom, 

 their depth of color indicating the density of the 

 deposit. If we now gently lift the glass, and with 

 the utmost care remove the fungus, perhaps by 

 the aid of pins previously inserted, in a perfectly 



