Octoser, 1917.] THE ORCHID REVIEW. 229+ 
have sufficient water to prevent shrivelling. Secondly, every plant should 
have sufficient water to keep its rooting system in a healthy condition. 
Here, again, extremes must be avoided, for the effect of too much water is 
just as bad as that of too little. Both means the loss of the roots and the: 
vitality of the plants. 
ATMOSPHERIC MOISTURE.—With the reduction in temperatures there 
must be a corresponding reduction in the amount of atmospheric moisture, 
and the proper balance of heat and moisture must be carefully maintained.. 
An over-heated, stuffy atmosphere is as harmful as a cold, damp, and’ 
saturated one, and both extremes must be strictly avoided. 
DeENDROBIUMS that have finished their growths should be thoroughly 
cleaned and placed in their winter quarters in the resting house. This is 
easily accomplished now that they have all attained that condition, and if 
cleaned and arranged they should not be much trouble until their flowering 
nodes begin to swell in the spring. Sufficient water to pre them from: 
shrivelling will be almost their only requirement. 
CyprIPEDIUMs which are now pushing up their flower spikes will also- 
be much improved by going through the same process. By cleaning them, 
and neatly staking up their flowers, as they attain sufficient length, and. 
arranging them in the house in which they are to produce their bloom, it 
is possible to save much labour and time. C. superbiens (Veitchii),. 
unfortunately not too common, should be repotted, if necessary, as it 
passes out of bloom. This plant succeeds when grown in a Cattleya house 
temperature, potted in the compost advised for other tesselated-leaved 
Cypripediums. Not being a strong-rooting member of this large genus, it 
should not be placed in large receptacles. 
CATTLEYAS AND ALLIES.—Cattleyas and Leliocattleyas are now making” 
a great display, and it is a question which is their best season, spring or 
autumn. But there are now so many brilliant hybrids that the flowers may 
be enjoyed the whole year round. Any plants that have flowered, and are 
now pushing new roots, may still have new material if the old compost is- 
at all decomposed. Plants potted at this late season, however, should be 
watered with extreme care, and only sufficient water should be given to 
keep them plump until the roots have freely entered the new material. 
LESLIA ANCEPS and its varietias are now pushing up their flower spikes 
rapidly, and must have generous treatment. The spikes should be carefully 
and neatly staked, and should be tied in such a manner that their tips are 
clear of the glass. 
L&LIA PUMILA and other Lalias which were placed in the Cool house 
for the summer months had better now be returned to the Intermediate 
house, and there given liberal supplies of water at the roots until they have 
finished flowering and their growths are complete. When new roots are: 
