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EXPLANATION OF PLATES. 



PLATE III. 



Fig. 



12. Josephine Pear with Bitter Pit. (Campbell's Creek, 20.4.11.) 



13. Cross section of same through core, showing brown tissue through flesh. 



14. Section lengthwise of similar Pear. 



15. Winter Nelis Pear with Bitter Pit. (Campbell's Creek, 20.4.11.) 



16. Cross section of same. 



17. Section lengthwise of similar Pear. 



