140 
Respiration of plants, 58, 59. 
Rhizome, 71. 
Rhododendron, 75. 
Rice, 18. 
Rice-fields of Carolina, 19. 
Ringent flowers, 28. 
Rings in exogenous wood denote 
years of growth, 91. 
Roots, 83, 84. 
Rope bridges of Mexico, 39. 
Rose, 45-47. 
cultivation of, in India, 46. 
wild, 47. 
Rose-wood, 87. 
Saffron, 81. 
Sago, 129. 
Salcey Forest Oak, 94. 
Samphire, 68-70. 
Sandal-wood, 87. 
Sap, circulation of, 90. 
effect of light on, 90. 
Satin-wood, 87. 
Scriptures, allusions to cone-bearing 
trees in, 120. 
Sea-Aquarium, 68. 
Sea-Weeds, 67, 70. 
Sensitive Plant, 82. 
Shapes of leaves, 35, 36. 
Shellbark Hickory, 100. 
Silver Fir, 118. 
Sleep of plants, 32. 
South American Indians, usefulness 
of the palm-tree to, 132. 
Spadix, 56. 
Spike, 29. 
Spikenard, 80. 
Spruce, 117. 
roots of, used in making birch- 
bark tents, 105. 
Stamens, 27, 28. 
Starwort, 66. 
Stems of the grasses, 14. 
Style, 27. 
Sun-flower, 49. 
Sweet Potato, 45. 
Tea, annual product of, in China, 78. 
Tea-leaves, properties of, 77. 
Tea-Plant, 76. 
green and black tea product of 
the same plant, 77. 
Tents made of birch-bark, 105. 
INDEX. 
Thyrse, 29. 
figured, 33. 
Tortworth, chestnut-tree at, 98. 
Transformation of an insect, 63-65. 
Trees add to beauty of a landscape, 
103. 
contrast of, afforded by different 
climates, 124. : 
3000 years old, 115. | 
uses of, 85, 86. 
Trumpet-Flower, 43. | 
_Tuberous roots, 84. 
Tulip, 55. 
Tulip Poplar, 107. 
Umbel, 29. 
figured, 31. 
Umbrella Tree, 111. 
bea States, variety of plants of, 
4. 
Vegetable kingdom, orders of, 12. 
Vegetative power of wheat, 15. 
Venus Fly-trap, 82. 
Victoria Regia, 51-53. 
Bridges’s account of discovery 
of, 51, 52. 
Walnut, 99. 
Water Buttercup, 66. 
Water-Lily, 54. 
Wax from palm-trees, 130. 
Weeping Willow, 101. 
Wellingtonia of California, 113. 
Wheat, 15. 
not found wild, 15. 
White Pine, 116, 117. 
White Lily, 55. 
White Oak, 93. 
Whorl, 35. 
Wild Roses, 47. 
Willow, varieties of, 102. 
Winfarthing Oak, 94. 
Woods used in the arts, 87. 
Yellow Amaryllis, 55. 
Yellow Birch, 104. 
Yellow Pine, 118. 
Yew, 108. 
in the United States, 110. 
Yews of Fountain Abbey, 109. 
Zebra-wood, 87. 
