NOVEMBER, 1912.] THE ORCHID REVIEW. +17 
leaves as much as possible. Water must be given with discretion, as the- 
leaves and roots are very sensitive, and susceptible to injury. The plants. 
should have water applied to the roots whenever they become dry, as if 
allowed to remain dry for any length of time the health of the plants will 
be impaired; and the proper development of the flower spikes now pushing 
up will be hindered. Care should:be taken that the water used is of the 
same temperature as the house in which they are growing. 
AERIDES.—There are other inmates of the East Indian house that 
require careful treatment at this season. I refer to the various species of 
Aérides, Saccolabium, Rhynchostylis and their allies. They will now have 
completed their growths, and as root action ceases, the green tips of the 
roots become sealed over. When this occurs careful waterings are 
necessary, in fact only sufficient water will be required for some little time 
to keep the leaves plump and in a normal condition. 
OpontocLossuMs.—Plants of O. Uroskinneri, O. bictoniense, and 
others that are growing fast and pushing forth roots from the base of their 
growths may be potted if necessary, and it is essential that the potting 
material should be thoroughly porous. These plants having thick fleshy 
roots, they should not be potted too firmly, and they are best placed at the 
driest and warmest end of the house. 
CYPRIPEDIUMS.—Plants of the winter-flowering section, as the flower 
spikes become long enough, should be neatly staked, cleaned, &c., as 
advised last month, so that when in bloom there is no unnecessary moving 
the plants about, which may cause injury by rubbing and other means.. 
The summer-fowering Cypripediums, now in full growth, must have water 
supplied to them whenever they become dry at the roots. The majority of 
these are lovers of heat, and are best grown in the warmest house, in a 
position which is fairly humid. A dry parched atmosphere is detrimental to 
Cypripediums at any time, and, being specially favourable to that formidable 
pest, thrip, must be avoided. Any plants of the Selenipedium section that 
require potting may be done at this season, using a compost as advised for 
the green-leaved members of this popular genus. The usual precautions 
must be taken in applying water to the newly-potted plants. 
CATTLEYAS and La&LiocaTTLEYAs.—Thanks to the hybridist, it is now 
possible to have these lovely flowers the whole year round, and they are 
invaluable for decorative purposes. They are unquestionably the most 
showy and desirable of Orchids for blooming during the autumn and winter 
seasons. Among the species now in flower are the lovely C. Dowiana. 
aurea, C. labiata, and C. Bowringiana, while the hybrids which flower at 
this season are numerous, and differ enough in colour and form to satisfy 
the most fastidious, and everyone may gratify their individual taste. Many 
hybrid Cattleyas have the advantage of many of the species as regards the- 
