Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 4 · column 6 of 9 · from the scan, no model involved
clearcutting. There were, however, two important differences:
1. The forests were unable to recover—or even to approach—their former condition, because the predominant tree lost its competitive ability. In other words, the alien disease suddenly reduced the American chestnut to an insignificant position in the forest. It has not regenerated.
2. This catastrophe ex
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