. The orchid-grower's manual : containing descriptions of the best species and varieties of orchidaceous plants . or more from therim to the soil, to allow of a sufficient quantity of water beinggiven at one time. The soil best adapted for their growth isa mixture of good fibrous loam, turfy peat and silver sand,adding more or less of each, according to the peculiar habitatof the particular plant to be potted. They must all havegood drainage, and the addition of lumps of sandstone or ofcharcoal to the soil will have a beneficial effect, serving tokeep the mass open, and the roots cool and mois
. The orchid-grower's manual : containing descriptions of the best species and varieties of orchidaceous plants . or more from therim to the soil, to allow of a sufficient quantity of water beinggiven at one time. The soil best adapted for their growth isa mixture of good fibrous loam, turfy peat and silver sand,adding more or less of each, according to the peculiar habitatof the particular plant to be potted. They must all havegood drainage, and the addition of lumps of sandstone or ofcharcoal to the soil will have a beneficial effect, serving tokeep the mass open, and the roots cool and moist. They aremostly propagated by division of the roots, just as the freshgrowth commences ; and though they all require a season ofrest, they must never be allowed to become dry at the roots,nor must the temperature be allowed to be lower in winterthan from 35° to 40°—not that certain kinds will not with-stand some few degrees of frost, but we beHeve they will allthrive far better if not subjected to such extremes. In thegrowing season, abundance of water should be poured round 624 OBCHID-GKOWEE S and about them, to keep a moist and cool atmosphere, inwhich they deHght. A SELECTION OF GREENHOUSE AND FRAME ORCHIDS. Cypripedium Calceolus, Limi.—This, though a Britishspecies, is so rare and beautiful, that it well deserves a placein every collection. It grows about a foot high; the leavesare oval, smooth, and dark green ; theflowers yellow and brown. Fig,—En(/.(A Bot., t. 1 ; Lodd. Bot. Cab., t. 363.—Europe. Cypripedium candidum, Willd.—An ele-gant little species which at present is rarein cultivation. The leaves are somewhatlanceolate, dark green; the flowers are pro-duced singly and are of moderate size, thesepals and petals green with brown streaks,the latter slightly twisted, and the lip isCYPRIPEDIUM somewhat oblong, white, spotted withCALCEOLUS. brownish purple inside. It is a very de-sirable plant. Fig.—Flore des Serres, t. 962.—North Americaand Cana
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