the flowers are of brilliant colours, several of them being cup-shaped, and many with the calyx more ornamental than the corolla. The seeds will generally keep good for several years; and several of them, particularly those of the kind called caryopsides, when sown, are often a long time before they come up. CHAPTER II. THE ORDER LEGUMINOSÆ: ILLUSTRATED BY THE SWEET-PEA, THE RED CLOVER, ACACIA ARMATA, THE SENSITIVE PLANT, THE BARBADOES FLOWER-FENCE, THE CAROB-TREE, THE TAMARIND, THE SENNA, THE GLEDITSCHIA, THE LOGWOOD, THE JUDAS-TREE, AND THE KENTUCKY COFFEE-TREE. This order is a very numerous one, containing above three hundred genera, and including several highly important plants, both for food and commerce. As examples of the utility of the Leguminosæ for food, I need only mention the pea and bean, and all their numerous allies; and as examples of their importance in medicine and the arts, I may enumerate senna, liquorice, the tamarind, gum-arabic, and logwood. Among the ornamental plants belonging to this order are, the Laburnum, the Furze or Gorse, the Robinia or False Acacia, the true Acacias, the Sensitive Plant, and the Barbadoes Flower-fence. It will be seen by this enumeration, that the flowers of the Leguminosæ differ from each other nearly as much as those of Ranunculaceæ; but when in seed, they are all easily recognised by their seed-vessels, which are always legumes, that is, bearing more or less resemblance to the pod of the common pea. To aid the memory in retaining the great number of genera included in this order, various methods have been devised of re-dividing it; and of these I shall adopt the newest, which is also the simplest, by which they are arranged in three tribes, according to their flowers. TRIBE I.—PAPILIONACEOUS FLOWERS. [Illustration: FIG. 13.—FLOWER, POD, AND TENDRIL, OF THE SWEET-PEA.] [Illustration: FIG. 14.—STAMENS OF THE SWEET-PEA.]