Bui. 66, Bureau of Chemistry, U. S. Dept. Agr. 



Plate VI!. 



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Fig. 1.— Fibrovascular Bundles of Pear. ■ 75. 



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i 





Fig. 2.— Fibrovascular Bundles of Quince, x 75. 



l'li()t(i^n-ai>hs l>y liiirton .1. Howartl. 



