ORCHIDS FOR THE GREENHOUSE, &C. 623 



frame, either planted out or in pots. Indeed, many of the 

 terrestrial kinds will succeed well in the open air if a little 

 care is bestowed upon the selection and preparation of the 

 situation. The number of species we have here enumerated 

 is not great ; but in the course of a few years they might 

 receive numerous accessions if plant-loving ladies and 

 gentlemen, as well as gardeners, would take up the 

 growth of these beautiful plants. Any one having friends 

 at the Cape, or in North America, or Australia, should 

 strongly impress upon them the desirableness of sending 

 home the tubers of any Orchids they may find. By this 

 means we should soon make many valuable additions to our 

 collections. 



The Orchids described in the following selection are all 

 terrestrial species, and in cultivation must not be elevated 

 above the rim of the pot, as is the custom with the epiphytal 

 kinds, but there must be a space of an inch or more from the 

 rim to the soil, to allow of a sufficient quantity of water being 

 given at one time. The soil best adapted for their growth is 

 a mixture of good fibrous loam, turfy peat and silver sand, 

 adding more or less of each, according to the peculiar habitat 

 of the particular plant to be potted. They must all have 

 good drainage, and the addition of lumps of sandstone or of 

 charcoal to the soil will have a beneficial effect, serving to 

 keep the mass open, and the roots cool and moist. They are 

 mostly propagated by division of the roots, just as the fresh 

 growth commences ; and though they all require a season of 

 rest, they must never be allowed to become dry at the roots, 

 nor must the temperature be allowed to be lower in winter 

 than from 35° to 40° — not that certain kinds will not with- 

 stand some few degrees of frost, but we beHeve they will all 

 thrive far better if not subjected to such extremes. In the 

 growing season, abundance of water should be poured round 



