V. LIST OF ILLUSTRATIONS. 



Fig. 1. Surface view of lower epidermis of the leaf of jSTorton. 



a. Normal cell. 



b. Cells modified over bundle traces. 



c. Cells modified around gland cells. 



d. Gland cells. 



e. ytomata. 



Fig. 2. . Witlldra^fn. 



Fig. 3. Striations on lower epidermis of leaf of Norton. 

 Fig. 4. Striations on upper epidermis of leaf of Norton. 



Fig. 5. . Withdrawn. 



Fig. 6. Cross-section through a leaf of Up River, 

 a. Gland cells. 



Fig. 7. . Withdrawn. 



Fig. 8. . Withdrawn. 



Fig. 9. Section through midrib of Van Ness Red. 



a. Modified epidermis. 



b. Collenchyma. 



c. Latex canals. 



d. Internal phloem. 



e. Abnormal xylem inside of internal phloem. 



Fig. 10. Perspective section of a petiolar nectary of Yellow Jersey. 

 Fig. 11. Section of petiole of Georgia, two inches from the base, to 

 show arrangement of bundles. 



a. Internal phloem. 



b. Dividing cells between bundles. 



c. Crystal cells. 



d. Collenchyma. 



Fig. 12. Section of petiole of Up River, one inch from the base, same 

 magnification as Fig. 11. 



a. Endodermis. 



b. Hair. 



Fig. 13. Section through tip of stem of Van Ness Red. 



a. Hairs. 



b. Gland cells. 



lOO 



