_Odontoglossum Alexandræ Cooksonii_ is en evergreen plant, growing like _O. Alexandræ_ itself, along with which it was imported. The sepsis and petals are white, irregularly and heavily marked with brownish crimson; while the lip, which is of the some colour—white, and spotted with brownish crimson, bears in addition a golden yellow crest. It flowers during the summer, and lasts for about six weeks in bloom, requiring the same treatment as _O. Alexandræ_, which has been fully explained under Plate 47 of our first volume. The Orchids at Dunlop House, Ayrshire, the seat of T. D. Cunningham Graham, Esq., include several wonderful specimens that have been many years attaining their present size; while it is remarkable to find such plants in perfect health. We were delighted to find such an example as may here be seen, of _Angræcum sesquipedale_, which from its size must have been one of those brought from Madagascar some years ago by the Rev. W. Ellis. This plant was nearly four feet in height, with two breaks at the bottom, and six flower spikes, perfect as a specimen, and such as those who are fond of well-grown plants would consider worth a long journey to see. Opposite to this were some remarkably fine plants of _Vanda suavis_, one of which is nine feet high in the main stem, with seven fine growths of four feet high, and five smaller growths. We believe we may safely say that this is one of the finest specimens we have ever seen. _Vanda tricolor_ is nearly equally fine, having the main stem eight feet high, supplemented by four growths four feet high. There are besides other fine Orchids in the same house, and some good foliage plants, of which there is a fine collection. We have often heard it stated that Orchids cannot be successfully grown unless there is a house set apart for them; but the fact that these Vandas, Angræcums, &c., are grown in company with ordinary stove plants, at once upsets this notion, and proves that any one having a good stove may cultivate in them these most beautiful Orchids, which, we may add, are nearly always in bloom.