Xx 
YIELD OF ASSOCIATED SPECIES 
IN the discussion of the composition of the forest it 
was shown that, with the exception of some swamps 
and certain steep slopes and ridges, the hardwoods 
form an important element in the forest. Forty-two 
per cent. of the entire tract is classified as land on 
which hardwoods predominate. Until recently there 
has been comparatively little market for the Adirondack 
hardwoods, with the exception of Black Cherry. This 
has been largely due to the fact that hardwood lumber 
is difficult to handle, and because the demand has not 
been sufficiently great to make lumbering profitable. 
There is, however, an increasing demand for Birch and 
Maple, and many lumbermen are now cutting the hard- 
wood timber where the haul to the railroad is not too 
long. In view of the fact that the Adirondack and St. 
Lawrence Railroad runs through the Park it is im_ 
portant to know the amount of available hardwood 
timber. 
In the 1046 valuation surveys all species other than 
Spruce were callipered down to ten inches breast-high, 
great care being taken to measure only such trees as 
were apparently perfectly sound. The large hard- 
wood timber is, however, very old, and there are 
probably many trees apparently sound which in the end 
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