166 THE ORCHID REVIEW. [JUNE, 1907. 
DIACRIUM BICORNUTUM.—This beautiful Orchid has now passed out of — 
flower, and the young growths will soon start away, when potting and 
rejuvenating should be taken in hand. A compost of peat and moss in 
equal parts, with some sand and small crocks should be used, and a 
drainage of quite half the depth of the pot should be given. We have had 
fair success with it, which we attribute to constant propagation. When 
the young growth is about one inch high cut it off, with the last made 
pseudobulb, and pot it up in as small a pot as possible. The old plant 
should then be left undisturbed, when a new lead will be quickly made, and ~ 
then new material for the roots to enter will be helpful. 
The position given should be in a house that is teeming with moisture, — 
and where the temperature does not fall below 70°, except during severe 
weather. They require much shade, and when growing freely it is essential — 
that they do not suffer from want of water, though if the house is as humid ~ 
as it should be they will not dry quickly. After potting, water should be . 
supplied very sparingly. Although I consider my success due to propaga- ; 
tion, yet the right house is a very important item. Diacrium bilamellatum ~ 
is a very pleasing variety, but it is not equal in beauty to D. bicornutum. — 
They flower at the same time with us, and one thing in favour of D. — 
bilamellatum is that it isa better grower. Both require the same treatment. — 
PACHYSTOMA THOMSONIANA is now fast developing its new pseudobulbs — 
in the warmest part of the Cattleya house, and will need copious supplies — 
of water until the flowering season is over. Overhead sprayings will also 
be extremely helpful. Watch carefully for any signs of red spider, which 
will soon disfigure the leaves, if not destroyed. 
Tuuntas.—Most of the early-flowering varieties will now have passed a 
out of flower, and the plants should be gradually hardened off till they are _ 
placed in such a house as an early peach house, where they can enjoy 
unrestricted sunshine. They will still require copious supplies of water 
until the foliage shows signs of decay, when the supply must be reduced. — 
They are often attacked with thrip when in such a house, often causing 
the foliage to decay prematurely. As it is not always desirable to fumigate Tt 
such a house, dip them in XLall plant wash, or any other reliable : 
insecticide. Full maturity cannot be attained if the foliage is lost before its _ 
time, and if maturity is not complete the best results cannot be obtained 
next season. As the later varieties pass out of flower treat them in the . 
same way. 
It is not advisable to treat propagated plants quite in this manner ? 
Grow them on as long as possible to get strength in the new bulb; them 
about the middle of August place them in a somewhat cooler house, wher — 
they will have sufficient sunshine to assist the ripening, and when wintet 
comes they can all be stored together. 
