Plate 8. Fig. 1. Characteristic Porcupine Denning Area in the Crater National Forest, Oregon. Mount McLoughlin in the Background. Fig. 2. Characteristic First Work of Porcupines on Yellow Pine Fig. 3. Yellow Pine Deformed by Porcupines. The original terminal leader has been killed, and the new scattered leaders have been peeled and are dead or dying. Such trees will never make good timber.
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