JANUARY, 1915.] THE ORCHID REVIEW. 19 
suggested. This advice was at once carried out, at the same time the 
atmosphere of the house being kept somewhat drier, and after a few days it 
‘was seen that the marks in the leaves had dried up, and the disease was 
checked. I mention this principally to show that much good may be 
accomplished by anyone who will try to find out, and remedy the causes 
of failure. 
Should mild weather continue, much caution will be required in the 
regulation of the various houses or divisions, as owing to the smaller amount 
of fire-heat required to keep up the desired temperatures, an over-abundance 
.of moisture in the air is likely to exist, to counteract which the hot-water 
pipes should be made a trifle warmer, and more fresh air supplied. 
In the five houses or divisions mentioned, almost every Orchid can be 
grown more or less well, but where a large number of some particular class 
has to be grown, it is advisable to give them a structure to themselves. 
‘Thus in many gardens there will be, besides those mentioned, a 
Phalenopsis house, a Dendrobium house, a Cymbidium house, &e. If 
any grower possessing only the five divisions mentioned should at any time 
find me advising the growing of a particular species or hybrid in one of the 
last-named houses, he may take it for granted that in some part of his 
houses conditions almost identical with those advised can be found. 
At this particular period it will be noticeable in some collections that a 
few of the plants do not look quite so robust as they did at the end of the 
summer. Some may have their foliage looking rather more yellow than 
usual, others have their pseudobulbs slightly shrivelled, especially those 
that have bloomed during the past month or so. In such cases heavy 
-waterings are too often afforded, in order to speedily make them green and 
plump, but such treatment should be avoided, as it invariably ends in the 
destruction of the roots, and in many cases brings disease into the leaves 
and pseudobulbs. A safe practice is to keep the plants rather on the dry 
side until growth or root action recommences, trusting principally to the 
maintenance of a genial atmosphere to pass them safely through the winter 
months. 
CALANTHES.—From the middle of November to the end of the present 
month the different varieties of Calanthe of the vestita section will have 
‘been in bloom, and as the spikes are cut the short period of rest for the 
plants will commence. It will then be necessary to thoroughly harden and 
mature the pseudobulbs, so that, when the growing season commences, the 
new growths will start with increased vigour. Immediately the spikes are 
cut, water should be entirely withheld from the roots, and the plants may 
be placed on a dry shelf close to the roof glass of the house in which they 
have been growing, where they will obtain the benefit of all sunlight. 
Before putting the plants away in their resting quarters it is advisable to 
