X TABLE OF CONTENTS. 



PAGE 



Sect. 1 8. Restio diffusus 88 



„ 19. Dermal Glands 88 



„ 20. Pulverulent Hairs 99 



„ 2i. Digestive Glands 100 



„ 22. Silicification, Calcification, Cystolitlis 102 



„ 23. Deposits of Lime 106 



Division II. Cork. 



„ 24. Origin and Structure of Cork 1 108 



Division III. Paarenohyma. 



„ 25. Forms with Thin Walls 115 



„ 26. CoUenchyma, Sclerotic Cells . . . 119 



„ 27. Endodermis (protective sheath) ' 121 



CHAPTER II. 



Sclereuchyma. 



Sect. 28. General Observations 126 



„ 29. Short Sclerenchyma, Stone Sclerenchyma 127 



„ 30. Sclerenchymatous Fibres 128 



CHAPTER III. 



Secretoiy Reservoirs. 



Sect. 31. Synopsis 135 



„ 32. Sacs containing Crystals 137 



„ 33. Sacs containing Mucilage 143 



„ 34. Sacs containing Resin and Gum-resin 145 



„ 35. Sacs containing Tannin 153 



CHAPTER IV. 



Traohese. 



Sect. 36. Synopsis 155 



„ 37. Fibrous Thickening of the Walls 1 56 



„ 38. Bordered Pits 158 



„ 39. Transverse Bars 163 



„ 40. Tracheides 164 



„ 41. Vessels 165 



„ 42. Contents of the Tracheae, Thyloses 169 



CHAPTER V. 



Sieve-tubes. 



Sect. 43. Angiosperms 172 



„ 44. Gymnosperms and Ferns 170 



