INDEX 



Absorbing organ, 160, 163, 164. 

 Absorption, 21, 24, 26, 50, 51, 

 52. 



of light, 63. 

 Acer, 4, 5. 

 Acids, 13, 18, 19. 

 Adam and Eve, 130. 

 Aerial roots, 44. 

 Air, composition of, 57. 



changes in, by plants, 185, 186. 

 Algae, 14, 52, 53, 208, 209. 

 Alkaloids, 19. 

 Allium, 135. 

 Amaranth, 59. 

 Anchorage, 24. 

 Annual rings, 108, 113. 

 Annuals, 113, 114. 

 Antimony, 17. 



Apple, 67, 90, 117, 146, 175-178. 

 Argon, 57. 

 Arisaema, 27. 

 Arrow-leaf, 208. 

 Arsenic, 17. 

 Ascent of sap, 104, 107. 

 Ash, 10, 11, 15, 16. 

 Assimilation, 21. 

 Autumnal colors, 67, 68. 

 Autumnal leaf fall, 86. 

 Axis, maui, 93. 



Bacteria, 37, 52, 53, 76, 137, 201. 

 Ballast roots, 30. 

 Balsam apple, 120. ' 

 Bananas, 85. 

 Bark, 110, 111. 

 Bast, 98. 



Bean, 36, 39, 40, 49, 56, 75, 109, 



112, 148, 217. 

 Beech, 4, 29, 96, 133. 

 Beet, 19, 48, 69. 

 Begonia, 54, 107, 132. 

 Biennials, 113, 114. 

 Birch, 67. 



Bladderwort, 66, 78, 79, 119, 209. 

 Bleeding, 105. 

 Bloom, 84.' 

 Bracts, 95. 



Breathing, 21, 184, 185. 

 Bristles, 122, 172. 

 Bromine, 16. 

 Buds, 49, 66, 94, 115-119, 121, 132, 



133. 



Bulbs, 121, 133, 135. 

 Bulbils, 133, 134, 135. 

 Bulblets, 134-136. 



Cabbage, 84, 90. 



Cactus, 1, 123. 



Calcium, 16. 



Calcium phosphate, 18. 



Calla, 27, 28, 102, 121. 



Canna, 70. 



Carbon, 16, 18, 61. 



Carbonic acid, 37, 57, 61, 64, 183- 



185, 186, 187, 188, 189. 

 Carrot, 11, 35. 

 Castor-oil plant, 194. 

 Cat-tail, 207. 

 Cellulose, 18. 

 Charcoal, 10, 11. 

 Cheat, 7. 

 Cherry, 5, 133. 



213 



