ae 
JuNE, 1912.] THE ORCHID REVIEW. 179 
DENDROBIUMS.—The young growths of the deciduous and semi- 
deciduous Dendrobiums, as they develop, should be looped up to the 
suspenders, as if they are allowed to hang over the sides of the receptacles 
in which they are growing they are easily broken or damaged, and by these 
means air and light is enabled to circulate more freely amongst them. 
When the roots have penetrated the compost, and the growth is 
vigorous, the water supply must be increased. 
CATTLEYAS.—Strong plants of C. Warscewiczii (gigas), C. Dowiana, 
and C. D. aurea, whether showing flower sheaths in the young growths or 
not, should be grown in as light a position as possible, being elevated close 
to the roof glass of the house, giving them plenty of water at the roots 
whenever they become dry. The potting of these plants is best deferred 
until they have flowered, and the new pseudobulbs are fully developed and 
are seen to be pushing new roots from their base. Take every opportunity 
of repotting any plants that are in need of it, whenever they are seen to be 
in the proper condition, namely, when making new roots from their base. 
Many a sickly plant is brought into a robust condition by closely observing 
its manner of growth, and carefully giving new compost just at the right 
time. It is quite safe to take any of these plants in hand whenever they 
are seen to be making new roots. 
Lz vias.—Such well-known Orchids as L. autumnalis, and var. alba, L. 
albida, L. Gouldiana, and others that have been resting and are now 
starting into growth, should be suspended at once ina light position in the 
Mexican or Intermediate house, and afforded a plentiful supply of water 
while the growths are developing. Any necessary repotting may be done 
at this season, using the same compost as for L. anceps. They will succeed 
in shallow pans or teak wood baskets. 
THUNIAS.—As the flowers of the different species commence to open, it 
is advisable to remove the plants to a cooler structure, and it will generally 
be found that those which open in the cooler atmosphere last longer than 
if kept in the Warm house. 
OncipIuMs.—Any plants of O. ampliatum and its variety majus that 
have passed out of flower should be induced to take a rest by being placed 
in a cool Intermediate house, and only sufficient water should be given to 
keep the leaves fresh and the bulbs plump. As soon as growth 
recommences the plants should again be returned to the warmer atmosphere 
of the East Indian house. Any O. leucochilum that have been flowering 
in the Intermediate house should, immediately their spikes are over, be 
placed in the Cool house to rest. The pseudobulbs of this and several 
other Oncidiums often shrivel to a considerable extent when carrying strong 
branching flower spikes, but with care and attention they soon return to 
their normal condition, when growth recommences. Keep the plants cool 
