Fic. 31. A view of “ The Plains’ near Dobson’s which shows pure heath- 
shrub, occasional clumps of high-shrub, and the invading tamarack. 
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Photo by W. L. Bray. 
Fie. 32. Heath-shrub and scrub-oak in an open stand of pitch pine on 
the Hudson-Mohawk sand plain near Schenectady. 
