XX VEGETABLE PHYSIOLOGY 
FIG. PAGE 
40. Section of Dicotyledonous Stems of three ages. ‘ y . 43 
41. Embryo of Orobus . 3 c i ‘ ‘ . » 444 
42, Stratification in Cell-walls 5 j . 49 
43. Longitudinal Section of Vascular Bundle of Gunllower Stem . 50 
44, Wood-cells, showing Middle Lamella 3 : z a . 51 
45. Section of Epidermis of Leaf 3 : . A . . . 54 
46. Cork in Twig of Lime . : 4 . . , . 55 
47. Section of a Lenticel : F . 4 é ‘ . 55 
48. Crystals in Wall of Cell of Bast : ‘i . ‘ . 56 
49. Cystolith of Ficus. . > ‘ ‘ # @ 6 
50. Apparatus to show the process af ee : : . 60 
51. Young Vegetable Cells . é ‘ : . “ <9 162 
52. Adult Vegetable Cells. - é ; . 63 
53. Cells undergoing Plasmolysis : ‘ : F . . 64 
54. Rootlets with Root-hairs ‘ é ss . 7 
55. Root-hair in contact with particles of Soil a : awe O74 
56. Section of Young Root . 75 
57. Diagram of Course of Vascular Bundles f ina Hicolyleaonous Plant 716 
58. Veins of a Leaf. ‘ ‘ < oT 
59. Ending of a Vascular Bundle i ina eat : : ‘ . 718 
60. Intercellular Spaces in Leaf . : . . ‘ 78 
61. Stomata on Lower Surface of Leaf ‘ ‘ . . 80 
62. Apparatus for the Estimation of Root-pressure ‘ : . 89 
63. Apparatus to demonstrate Transpiration : . ai . . 94 
64. Section of Blade of Leaf : : . 95 
65. Apparatus to show Dependence of Withering on Dine. of Water 21 196 
66. Stomata on Lower Surface of Leaf . ‘ s ‘ 4 . 98 
67. Section of a Stoma . 7 7 , 2 is . . 98 
68. Darwin’s Potometer . : ; . 108 
69. Apparatus to show the duction of Tene siention : . . 105 
70. Ending of a Vascular Bundle in a Leaf . ‘ ‘ ‘ . 106 
71. Formation of Intercellular Spaces . F F i os Pl 
72. Intercellular Spaces in Root 3 3 , : . 111 
73. Intercellular Spaces in Leaf “ “ : ‘ 5 . . 112 
74. Section of Leaf of Isoétes c ‘ E ‘ ‘ ‘ . 112 
75. Section of Rhizome of Marsilea . F . : , » . 118 
76. Section of Stem of Potamogeton : : : - . 114 
77. Section of Stem of Hquisetum  . ‘ : - ‘ » . 115 
78. Section of Stem of Juncus ‘ “ ; - ‘ . 116 
79. Section of a Lenticel 3 . . 117 
80. Apparatus to show Continuity of ‘Titereeiinler Braces in a Leaf . 118 
81. Section of Leaf of Heath ‘ “ A » . 119 
82. Root of a Leguminous Plant with its sTubereles i ‘ 140 
83. Section of Blade of Leaf 3 . , 144 
84. Absorption Spectra of Chlorophyll and Xanthophyl A . 148 
85. Chloroplasts in Cell 5 ‘ ‘ 3 . . 150 
86. Section of Leaf of Beta j r 7 P < . 11 
87. Section of Stem of Equisetum é P ‘ i ‘ . . 152 
