216 



INDEX 



Melon, 90. 

 Mesophyl, 65, 82. 

 Micrampelis, 126. 

 Midrib, 55. 



Mineral coatings, 12-14. 

 Mint, 94, 95, 99, 100. 

 Mistletoe, 45. 

 Moisture, 154. 



influence upon roots, 40. 

 Monotropa, 47. 

 Morning glory, 112, 126. 

 Mosses, 4, 7, 50, 80, 143, 193, 200, 



203, 205. 

 Moulds, 76, 77. 

 Movements, of roots, 38-43. 



of leaves, 73-75. 



of stems, 74, 112. 



sleep, 85. 

 Mullein, 85. 

 Mushrooms, 51, 52, 76, 77, 186, 



201. 



Mycelium, 52. 

 Mycorrhizas, 47, 48, 104. 



Naked buds, 116. 

 Narcissus, 63, 112. 

 Nerves, 55. 



Nitrogen, 16, 57, 61, 64. 

 Nodding movement, 112. 

 Nodes, 49, 94. 



Oaks, 4, 68, 95, 110, 198. 

 Offsets, 21, 133. 

 Oil, 19, 154. 

 Onion, 121. 

 Orchid, 48. 

 Organs, 22, 23. 

 Ovary, 148, 158. 



Oxygen, 16, 18, 57, 61, 64, 152, 183, 

 185, 186, 187, 188, 189. 



Paired seeds, 172-174. 

 Palm, 29, 111, 166, 162. 

 Pansies, 85. 



Parasites, 45, 77. 



Parasitic roots, 45. 



Passion flower, 126. 



Path of sap, 103. 



Pea, 39, 49, 56, 75, 178, 185, 190. 



Peach, 67, 90. 



Pelargonium, 116. 



Peony, 67. 



Perennials, 156. 



Petals, 85, 147. 



Petiole, 54, 72, 78, 81, 101. 



Phosphorus, 16. 



Pine, 4, 87. 



Pine sap, 77. 



Pistil, 148. 



Pitchered leaves, 77, 78. 



Pitcher plant, 78. 



Pith, 96, 98, 157. 



Plaster of Paris, 18. 



Plum, 67. 



Plumule, 161, 172, 179. 



Poison ivy, 123, 124. 



Pollen, 147-152. 



Pollination, 149-151. 



Polypody, 130. 



Pond-scum, 4, 53, 80, 120. 



Pond-weed, 14, 119, 208. 



Poplar, 4, 81, 110, 133. 



Position of leaves, 72, 73. 



Potamogeton, 14. 



Potassium, 16. 



Pressure, by growing roots, 42. 



by expanding cells, 190. 

 Primula, 85. 

 Protection, of roots, 43. 



of leaves and stems, 122, 123. 

 Protein, 18. 

 Protoplasm, 1, 2, 3. 

 Puff-balls, 201. 

 Pumpkin, 126. 

 Purposes of plants, 3. 

 Putty root, 130. 



Quercus Georgiana, 130. 



