MUSHROOM SPORE-PRINTS 143 
print of this kind is of course very fragile, and 
must be handled with care. But a comparatively 
slight deposit of the spores, without apparent 
thickness, will give us the most perfect print, while 
at the same time yielding the full color. Such a 
^>**A* ** 
print may also be fixed by our present method so 
as to withstand considerable rough handling, all 
that is required being to lay the print upon a wet 
towel until the moisture has penetrated through 
the paper and reached the gum. The spores are 
thus set, and, upon drying the paper, are quite se- 
