260 



INDEX. 



Habenaria, 127. 



Hairs, 43, 92, 136, 146, 202, 203. 



Halophytes, 169, 249. 



Harebell, 19, 80. 



Hawthorn, 36. 



Heart-wood, 151. 



Heat, 112, 138, 145, 164. 



Heath plants, 189, 200, 214. 



Helianthemum, 233. 



Heliotropism, 12, 13, 68, 72, 73, 



139. 



Hemlock, 190. 

 Horse-chestnut, 241. 

 Hosts, 106. 

 House leek, 19. 

 Houstonia, 129, 135. 

 Huckleberry, 214. 

 Hudsonia, 212. 

 Hura crepitans, 120. 

 Hydrogen, 153. 

 Hydrophytes, 168, 170, 174. 

 Hydrotropism, 91, 138. 



I 



Insects and flowers, 123. 

 Iris, 126, 133. 

 Isoetes, 94, 95, 208. 

 Ivy, 99. 



Juncus, 77. 

 Juniper, 51, 23$. 



Lactuca, 12, 197, 198. 

 Lady-slipper, 132, 133, 



136. 

 Lakes, 143, 148. 



135. 



Laminaria, 177. 



Larch, 178, 190. 



Latex, 136. 



Leafless forests, 226. 



Leaflet, 19. 



Leaf -relation, 53.) 



Lemna, 97. 



Lespedeza, 4$- 



Lianas, 60, 61, 62, 63, 64, 102, 



245, 246. 



Lichens, 194, 209, 214. 

 Life-relations, 4, 7, 8, 53, 77. 

 Light, 143, 167, 197. 

 Light-relation, 7, 8. 

 Lily, 38, 40. 

 Live-for-ever, 18. 

 Live oak, 101. 

 Liverworts, 118. 

 Locomotion, 113. 

 Locust, 207. 

 Long moss, 96, 101. 

 Loosestrife, 130, 135. 

 Lotus, 180. 



M 



Mangroves, 251, 252, 253. 



Maple, 26, 115, 116. 



Maranta, 38. 



Marchantia, 107. 



Meadows, 234, 235. 



Mechanical tissue, 172. 



Mesophyll, 38, 39, 40, 41, 4$, 152. 



Mesophytes, 168, 230. 



Migration, 58, 75, 147. 



Mildew, 109, 157. 



Milkweed, 117. 



Mimosa, 199. 



Mistletoe, 107. 



Mold, 109. 



Monocotyledons, 35, 85, 88, 116, 



186. 

 Moors, 187, 188. 



