

■^"fe!^^ 



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Vis. 3. ACRES OF DESOLATION. 



JIoi'L' than 5,(Kili OltO acres of suoh barren land are found in Pennsylvania. Much 



valuable timber wii.s lost through reckless exploitation of the original forest. 



Fig. 4. ACRES OF SCRUB OAK. 



Scrub Oak has no timber value. Large areas in our forests contain many weed 



species which often prevent other valuable trees from establishing themselves. 



