TABLE OF CONTENTS. 



PAGE 



Introduction i 



PART I. 

 THE FORMS OF TISSUE. 



CHAPTER I. 

 Cellular Tissue. 



Sect. I. General Introductory Remarks 27 



Divisiou I. The Epidermis. 



„ 2. General Definitions 29 



I. Composition of the Epidermis. 



„ 3. Enumeration of the Component Parts . 30 



„ 4. Epidermal Cells 30 



„ 5. Stomata 34 



„ 6. Air- and Water-stomata ... 45 



„ 7. Air-stomata . . 45 



„ 8. Water-stomata 50 



„ 9. Gaps in the Epidermis 54 



„ 10. Hair-structures _ 54 



2. Structure of the Epidermal Elements. 



a. Protoplasm and Cell-contents. 



„ II. Epidermal Cells 66 



„ 12. Stomata 67 



„ 13. Hair-structures . 68 



6. Structure of the Walls. 



„ 14. Cellulose- Membranes 70 



„ 15. Intramural and Superficial Deposits .... ... 73 



„ 16. Mucilage, Cuticle, and Cuticular Layers . . • • 73 



„ 17. Wax .... 82 



