31. Trees which grow on a dry soil: those which are found in wet localities: those which are found in both indifferently 372 32. Division of trees into various species 373 33. Trees which do not lose their foliage. The rhododendron. Trees which do not lose the whole of their foliage. Places in which there are no trees _ib._ 34. The nature of the leaves which wither and fall 374 35. Trees which have leaves of various colours; trees with leaves of various shapes. Three varieties of the poplar 375 36. Leaves which turn round every year 376 37. The care bestowed on the leaves of the palm, and the uses to which they are applied 377 38. Remarkable facts connected with leaves _ib._ 39. The natural order of the production of plants 379 40. Trees which never blossom. The juniper 380 41. The fecundation of trees. Germination: the appearance of the fruit 381 42. In what order the trees blossom 383 43. At what period each tree bears fruit. The cornel 384 44. Trees which bear the whole year. Trees which have on them the fruit of three years 385 45. Trees which bear no fruit: trees looked upon as ill-omened 385 46. Trees which lose their fruit or flowers most readily 386 47. Trees which are unproductive in certain places 387 48. The mode in which trees bear _ib._ 49. Trees in which the fruit appears before the leaves _ib._ 50. Trees which bear two crops in a year. Trees which bear three crops 388 51. Which trees become old with the greatest rapidity, and which most slowly 389 52. Trees which bear various products. Cratægum 390 53. Differences in trees in respect of the trunks and branches 391 54. The branches of trees 392 55. The bark of trees 393 56. The roots of trees _ib._ 57. Trees which have grown spontaneously from the ground 394 58. How trees grow spontaneously—diversities in their nature, the same trees not growing everywhere 395 59. Plants that will not grow in certain places 396 60. The cypress 397