120 THE ORCHID REVIEW. 
follow out the advice given as to when to pot an Orchid. This lovely 
section is very subject to some dreadful disease which attacks the plants 
and carries them off in a very short time. If signs of this black rot 
appear in a bulb or leaf, it is advisable to at once cut the bulb away and 
burn it, for by this timely act the rest of the plant may be saved. To 
a great extent this disease is propagated in the same way as spotting 
of the leaves—which latterly, since the cause became known, has not 
disfigured Orchids so much as it used to—and that is caused by 
excessive moisture and lowness of temperature combined, a condition 
that probably causes the black rot in L.-c. X elegans, and other such like 
plants, the sappy young bulbs being unable to throw off the super- 
abundance of moisture in a low temperature, and an atmosphere 
surcharged with aqueous vapour. L.-c. x elegans should be grown 
suspended at the warmest part of the Cattleya house, using well drained 
perforated pans for the small examples, and baskets for the larger 
specimens. For compost use two parts good fibrous peat to one of 
moss, employing both sparingly, so that the ball of material will not 
remain wet for any length of time, and under no circumstances should 
water be given, except when the bulk has become fairly dry. 
Cattleya Warscewiczii (gigas), and its variety, Sanderiana, are now 
pushing forward their new growths, but should still be only given water 
occasionally, to keep the flowers firm and plump, or no flowers will follow. 
As soon as the sheaths are visible, new roots will probably appear, and 
then is the time to give fresh material or repot (if necessary). We have 
potted members of this section when the buds have been out of the sheath, 
without injury resulting to the flowers or the plant. When potted just as the 
roots are starting away, they soon find their way into the new material, 
and water may be given more frequently and in greater quantity; however, 
it is the same with this section as with L-c. x elegans—an over generous 
supply given during dull cold weather endangers the health and existence 
of the young and succulent bulbs. C. Dowiana aurea, and the forms of 
C. X Hardyana, as Massaiana, and others of a like nature, should have a 
warm and light spot given them, and be treated as the above. This section 
gives the grower a deal of trouble, as they are so difficult to keep through 
the winter, most of them being so prone to making a second growth after 
the first one has flowered, and this second adventure coming so late in the 
year is more often than not a failure, in which case the subsequent growth 
has to come from the secondary bud or from a back bulb, and in either case 
the growth is almost certain to be poor in comparison with that produced 
from the proper bud at the right season. 
C. Schilleriana should have a very scanty supply of water until the shut 
is apparent. C,. Lueddemanniana (speciosissima), which remains in the — 
