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SEPTEMBER, 1910.] THE ORCHID REVIEW. 277 
them from shrivelling should be given till signs of activity are seen. In the 
Cypripedium house, Miltonia Roezlii will also be in flower, and although 
the supply of water should be reduced through the dull season, they should 
never be allowed to get dry.. M. Phalzenopsis, also in the Warm house, 
may now be repotted. The two latter species should be carefully watched 
for signs of red spider, and carefully dipped ina solution of insecticide as 
soon as traces of them are seen. 
OponToGLossuMs.—Although I have recommended earlier in the season 
to repot any plants of O. crispum that required it, and were in a proper 
condition to do so, it is during this month that the bulk of them require to 
be done. The compost recommended in the January Calendar, or a 
mixture of one-third each of polypodium and Osmunda fibres and sphagnum 
moss, well mixed together, should be used. Shade and water carefully 
until they are well rooted again. If there are varieties that it is desirable to 
increase, the back bulbs that are taken off when potting should be carefully 
labelled and placed together in a box or pan, with a little sphagnum moss, 
and placed in a cool, moist corner, where they will throw up new growths 
in due course. They should not be watered, as the moisture of the house 
will be sufficient for them until they are potted up in the usual way. 
Another and quicker plan to increase the stock is to sever the leading bulb 
with a sharp knife when the young growth is about two inches high, and 
carefully work it out of the pot with as many roots attached to it as 
possible. Then pot it up and water carefully, leaving the back portion of 
the plant in the original pot without disturbing it, where it will soon make 
a new lead. 
~ PLEIONES.—P. maculata and P. przcox will now have about completed 
their growths for the season, and the leaves will soon die away. As soon as 
signs of this are seen the supply of water must be reduced, only sufficient 
to help them carry their flowers and prevent shrivelling being given. P. 
humilis is only commencing to make up its growths, and should have a 
good supply of water. They should be repotted soon after flowering, in 
well drained pans, in a compost consisting of one-third each of fibrous 
peat, sphagnum moss, and oak leaves, with the addition of a good sprinkling 
of silver sand. They should be suspended from the roof of a Warm house, 
where they can have abundance of light, air, and moisture. After repotting 
they must be very carefully watered until well rooted. 
VaNnpas.—Vandas, Saccolabiums, Aérides, Angreecums, and Phalznopses 
now require less water at the roots and in the atmosphere. More light 
should now be admitted, and as much fresh air as can safely be given, to 
harden the young foliage, so that they may be able to withstand any attack 
of spot later on. But excess of either direct sunlight or draught must be 
guarded against, or a serious loss of foliage will result. 
