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DIRECTIONS. 
After the specimens have been carefully pressed and dried they should be 
mounted on the page opposite the illustration, by means of narrow strips of 
gummed paper passing over the stems. In the ferns of large growth the smallest 
mature leaves should be selected, and these, if too large for the page, should be 
folded as in illustration. This will show the under side, thus showing the sori, or 
fruit-bearing portion of the frond. 
To prevent the attacks of insects, the fronds should be poisoned by being 
brushed lightly with a weak solution of corrosive sublimate and alcohol, using a 
camel’s-hair brush for the purpose. If the wash leaves a white coat on the leaves it 
is too strong, and more alcohol should be added. 
Locality of each specimen found, together with date, name of collector, etc., 
will add much to the value of the collection. 
For a more thorough description and analysis of ferns see Prof. Lucien M. 
Underwood’s “Our Native Ferns and their Allies ” (New York: Henry Holt & Co.). 
