These plants come from Demerara. They are found growing on the outside branches of trees, where they get all the light possible. They will thrive on blocks of wood, also in baskets or pots. If grown on blocks they require some good live sphagnum moss about their roots; if in baskets or pots, a little rough fibrous peat and charcoal mixed together will suit them, but they must have ample drainage as they require a good supply of water in their growing season. When at rest they should get just enough water to keep the bulbs in a plump state. We have found the warm end of the Cattleya house to suit them. These Coryanths require a good deal of care to grow them well. We used, some years ago, to grow fine specimens and exhibit them, and they were always a source of great attraction. They are propagated by dividing the plants, leaving several old bulbs at the back of the leading one. This should be done just after they have started into growth. They must be kept free from insects which are apt to injure the young leaves as they are thin in texture. Sometimes thrips and red spiders will attack them, but they must be quickly exterminated. Lælia purpurata.—A very fine spike of flower of this most beautiful and chaste Orchid was received by us from J. Buchanan, Esq., of Edinburgh. This plant has its sepals and petals quite flat, and holds them so till the last, whereas many of the purpuratas curl up a little after they have been open a short time. The sepals and petals are white, with a broad finely-coloured dark lip, of which the front portion is rich crimson-magenta, and the basal part paler and distinctly veined, the throat being yellow, beautifully veined with dark crimson. Each flower measured as much as seven inches across, the petals being two inches across. Mr. Grossart, the gardener, says, the flowers show well up above the foliage, which gives it a most striking appearance among the other varieties.—B. S. W. [Illustration: PL. 99. DENDROBIUM FARMERII AUREUM.] DENDROBIUM FARMERII AUREUM. [Plate 99.] Native of India: Moulmein.