INDEX. 



371 



Plane-tree, 35, 317. 



Planting, 117. 



Plough, 157. 



Plum, 325. 



Pod, 224. 



Poeony, 64, 228, 234. 



tree, 230. 



Pollarding, 300. 



Pollen, 209. 



Pome, 231 . 



Ponds, 130, 184. 



Poplar, 318. 



Poppy, 353. 



Pores, 27. 



Potaraogetons, 282. 



Potash, 70, 90. 



Potato, 34, 197, 340, 357. 



Prickles, 293. 



Primordial leaves, 59. 



Propagation of plants, 189. 



Properties of plants, 21. 



Pruning, 275, 300. 



Prussic acid, 354. 



Pseudosperma, 235. 



Pumpkins, 357. 



Putrefaction, 166. 



Quick-lime, 163. 



Quick-set, 323. 



Quince, 231. 



Racemus, 24. 



Races, 274, 284. 



Radiate, 223. 



Radiation of heat, 137. 



Radish, 32. 

 Radishes, 356. 

 Radix fibrosa, 31. 



repens, 31. 



fusiformis, 33. 



praemorsa, 33. 



bulbosa, 33. 



tuberosa, 34. 



Rain, 132, 134, 296. 

 Rape, 353. 

 Raspberry, 229, 233. 

 Receptacle, 211, 217. 

 Reeds, 65. 

 Regions, 277. 

 Resinous trees, 314. 

 Resins, 94. 

 Rhizoctonia, 306. 

 Rhizomorpha, 303. 

 Rhizophora, 193. 

 Rhododendrons, 114, 118. 

 Rhubarb, 354. 

 Rice, 348. 



Rice plantations, 142. 

 Ringing trees, 87, 214. 

 Rivers, 130, 149. 

 Robinia, 292. 

 Rocks, 152. 

 Root*, 26, 38, 203. 



, duration of, 36. 



, germs of, 191. 



Rosacese, 325, 340. 



Rose-tree, 306. 



Rot, 307. 



Rotation of crops, 171. 



Rushes, 65. 



Rust, 307. 



Rye, 186, 307, 348. 



grass, 337. 



Saffron, 306. 



Saintfoin, 339. 



Salicaria, 283. 



Salicornia or Saltwort, 282. 



Salsify, 217. 



Salsola, 125, 282. 



Salts, 90. 



Sand-hills, 156, 157. 



Sands, 165. 



Sap, 23, 69, 298, 326, rise of, 52. 



, composition of, 77. 



, exhalation of, 73. 



, descent of, 84. 



, velocity of, 53, 70. 



Sarmentaceae, 328. 



Saxote, 283. 



Scales, 62. 



Scarzonera, 216. 



Scions, 192, 198, 204. 



Sea-cale, 356. 



salt, 126. 



Secretions, internal, 93 



, excretory, 96. 



Seed, 25, 126, 133, 152, 176, 189, 

 207, 220, 235, 290, 308, 331. 



, structure of, 240. 



, conveyance of, 278. 



Seminal leaves, 58. 



Sensibility, 18. 



Sensitive plant, 18. 



Sepales, 206. 



Shoot, 51. 



Silex, 70, 90. 

 Siliques, 229. 

 Sleep of plants, 99. 

 Slip, 182, 192, 195. 

 Smoke, 297. 

 Smut, 307. 

 Solanum family, 357. 

 Social plants, 282. 

 Soda, 70, 90. 

 Soil, 157. 



, argillaceous, 153. 



, siliceous, 153. 



, improvement of, 156, 161. 



Soldering, 271. 

 Soot, 168. 

 Sorghum, 349. 

 Spade, 157. 

 Spanish ChesnUt, 234. 

 Species, 250, 274, 284. 



