Contr, Nat. Horb . Vol. IX, 



Plate IX. 





Fig, 1.— Marginal Nectar Glands of Ricinus Leaf. Enlarged 43 Diameters. 



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y 



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Fig. 2.— Cross Section Through Large Nectar Glands at Base of Ricinus Leaf- 

 blade. Enlarged 30 Diameters. 



