246 THE ORCHID REVIEW. [OcTOBER, 1916- 
keeping a sweet and buoyant atmosphere, and allows the escape of a 
superabundance of moisture. Draughts, however, must be avoided, as they 
are highly injurious. 
WATERING at the present season is of the utmost importance, but no 
hard and fast rule can be laid down, as plants vary considerably in their 
requirements, and each has an individuality that should be considered. 
Those that are growing, or pushing up flower spikes, must have water 
applied to them whenever they become dry, but those at rest should only 
be watered when really necessary. The application of water to a collection 
of Orchids at this season is such a complex one that to give an outline of 
the requirements of the different genera would more than fill the pages at 
my disposal. 
RESTING OF ORCHIDS is another question of importance. It is well 
known that all plants require rest, and many Orchids fail to thrive without 
it. Some are capable of withstanding a much longer and more severe rest 
than others, and this is usually indicated by the possession of thick and 
hard pseudobulbs and leaves; but even resting plants should not be allowed 
to suffer by shrivelling from want of water at the roots. Shrivelling may 
also be brought about by resting the plants in too high a temperature. 
Careful observation will soon detect if a plant is happy or not, even whilst 
at rest. Plants kept continually growing because of unsuitable treatment 
sooner or later break down and die. 
DENDROBIUMS that have completed their growths should be thoroughly 
cleaned and placed in their winter quarters in the resting house, where they 
should receive all the light possible, and only sufficient water to prevent 
them from shrivelling. Any plants that have started to make secondary 
growth should be given a light position in the warmest’ house until it is 
completed before being rested. 
CYPRIPEDIUMS of the winter-flowering section are now pushing up their 
flower spikes, and these should be neatly staked and the plants cleaned, as 
advised last month. The beautiful C. superbiens, with any of the other 
summer-flowering Cypripediums, should be repotted, if necessary, as they 
pass out of bloom. In deciding if a plant should be repotted or not it 
should always be taken into consideration that it is much easier to keep 2 
healthy plant growing than to nurse an unhealthy one back into good 
condition. 
TuHuntAs.—Plants of this genus which still retain their foliage should 
be placed in a dry atmosphere in a position where they enjoy full sunshine, 
and receive water at intervals to prevent them from shrivelling. They 
should be examined from time to time for red spider, which often at this 
season infests the underside of the leaves. After the leaves bave fallen, the 
plants can be stored away in a dry place, keeping them quite dry at the 
