THE ORCHID REVIEW. 311 
_pachiana, M. rosea, M. Schlimii, M. tovarensis, and M. Wageneriana, as 
well as the whole of the M. Chimera section, may be mentioned as being 
the better for this removal, as the conditions of the Cool Odontoglossum 
house are sometimes a little too cold for them in winter, causing spot, or 
sometimes, worse still, the loss of the foliage. Those remaining, including 
M. Harryana and Veitchiana, should now henceforth be watered very 
sparingly, if the disfiguring of the foliage by black spot is to be avoided. 
Disa grandiflora should be removed from the cold frame to a shelf near the 
roof of the coolest house, where the air may circulate freely around them, 
thus preventing damping off. They require but little water during winter, 
but should not be allowed to get dust dry. Habenarias having now died 
down, should have a similar shelf, but in the Intermediate house, and must 
have sufficient water only to keep the tubers from shrivelling, and being 
quite dormant a very little of course suffices. 
Epidendrum vitellinum is one of the most beautiful of species, though 
it frequently seems anything but robust. It should be grown in the Cool 
house throughout the year. In summer, when making growth, it should 
be watered well, but during winter it must be kept dry, and be given a 
place near the light, or otherwise the leaves are apt to decay at the points. 
When re-potting them, which should be done in February or immediately 
after blooming at the end of July, use mostly good fibrous peat, and press 
it in firmly, surfacing with a thin layer of sphagnum moss. 
‘Such Orchids as Chysis, Catasetums, Coryanthes, and Cycnoches, all 
most beautiful and interesting when well grown, should have a long, dry 
winter rest, but in a temperature not lower than Intermediate. The same 
may be said of Cyrtopodiums and Mormodes. M. luxatum eburneum is a 
grand Orchid, rivalling the well-known and beautiful Catasetum Bungerothil. 
A similar course of treatment is necessary for all these, namely, heat and 
Moisture in summer and drought in winter. 
Vanda ccerulea is now producing its enormous flower spikes, and must 
not on any account suffer from the want of moisture amongst its aérial roots. 
No better house can be found for this species than the ordinary Cattleya 
house, and the treatment as meted out for Cattleyas is the most satisfactory 
both whilst growing and resting. A murky, stagnant atmosphere, especially 
during winter, quickly produces a_ lively fungus which speedily produces 
watermarks on the leaves, which afterwards turn black. It is a species 
that to grow really well is worth a great deal of trouble, therefore, if one 
Position in the structure fails, try another. A house, however, that does 
Cattleyas well will invariably do Vanda coerulea. The majority of Vandas 
do well in this house, it having been learnt that so much heat as the 
East Indian house affords is not required, but on the other hand is harmful. 
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