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 
