INDEX peg 
Senecio, 118 : 
Shepherd’s Purse, 94 
Sieve-tubes, 48, 49, 56. 
16, 24 
Sileneze, 97 
Silk-cotton trees, 100 
Silver-grass, 110 
Snapdragon, 127 
Snowberry, 114 
Soapwort, 97, 98 
Social Habit, 7, 30 
Soil, porosity of, 4 
Solanacee, 123-127. 
Solomon’s Seal, 142 
Speedwell, 32 — 
Spireeeee, 107 
Spirogyra, 43, 
Stachys, 129 
Stellaria, 97 
Stem, 50-64. 
— Stitchwort, 96 
Strawberry, 108 
Struggle for existence, 5, 6 
Sundew, 15, 16. Fig 3 
Sunflower, stem of, 51, 52, -55-58:. 
Figs: 18, 24, 25 
. leaf of, 72. Fig, 41 
5 oe Of Tie 416, 
pigs: 15, 
Fig, 8 
Figs. 17-33 
Figs. 97, 98 
Sweet Flag, 31, "140, Fig. 135 
sy 
Temperature, influence of, 3, 4 
Tertiary Period, 21, 22 
Thorniness, 11 
Thorn- Apple, 126; 
Thyme, 18, 129 
Tobacco, 126 
Tomato, 126 
Toothwort, 17 
Tradescantia, 46. Fig. 1 
Transpiration, oe Tey oF 28, 30, 
(35-19; 40 
Trientale, 120 
Trigonella, 33 
Tway-blade, 140 
Figs. 109-113 


Figs. 111-113 
U : 
Umbelliferze, 110-112. Figs. 88-90 
y 
Valerianella, 33 
Vallisneria, 76, 85 
Vanilla, 14 
Vaucheria, 42. F ig. J 
Veronica, 127 
Vessels, 48, 49, 57, 60. Figs. 15, 
16, 25, 28 
Viper’s Bugloss, 11 122, -- Wig, 
108 | f 
Virginian Creeper, 13 
W 
Water-Lily, 10 
Water- Plantain, 9 
Water-Plants. See Hydrophytes 
Water-Violet, 32, 119 
Wayfaring tree, 114 
Weigelia, 113.. Figs 92, 96 
Willow, 180, 131 
Willow-herb, 26 
Woad, 95. Fig. 64 
Wood, 47, 58, 68. Figs. 13, 26, 
37-39 
Wood Sage, 17, 130 
Wood Sanicle, 112. Fig. 90 
Wood Sorrel, 103 
Woodland Vegetation, 26, 28 
Woody Nightshade, 123, 124. Fig, 
109 = 
Wormwood, 17 
Xx 
Xerophytes, general characteristics 
of, 8, 10-12 
= stem of, 62. Fig. 31 
. root of, 71 
= leaf of, 3-76. Figs, 
42-44 
4 
Yew, 82 
THE END 

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