OcToBER, 1908.] THE ORCHID REVIEW. 308 
slugs, especially if looked over after dark, and a little arsenic and treacle 
on small pieces of bread will keep cockroaches down. Plants that have 
finished flowering can be kept drier till they commence to grow again, but 
not dry enough to shrivel the bulbs, or they will soon look sickly. 
DENDROBIUMS that have finished growing should be given air on a fine 
day, and syringed and encouraged in every way possible to make hard, 
plump bulbs. The house should be damped whenever it gets dry, as too 
dry an atmosphere will dry the pots and cause more watering than when the 
house is kept moist. Seedling Dendrobes should be grown on without 
resting until they get to flowering size, or they will take a good many years 
to flower, and that generally bars one getting anything up-to-date from them. 
Should any bulbs show flower a little out of season do not put them into a 
hot temperature, or the buds will not develop; leave them in the ripening 
house until the buds have formed, then there will be no danger of losing 
them. With a good collection of these one need not be short of showy 
flowers during the winter and early spring, and the hybrids are not so 
difficult to grow as the species are after they have been in cultivation for a 
few years, and they are not very particular where they are grown so long as 
they get plenty of light. Ccelogyne cristata can also be ripened with the 
Dendrobes, as it requires much the same treatment. Oncidiums, such as 
Forbesii, crispum, varicosum Rogersii, Odontoglossum grande, Lelia 
anceps, and autumnalis will do well in the same house, if one is short of 
room for the winter, and the house is not allowed to fall below 55°. 
ODONTOGLOSSUM CRISPUM.—Plants that were potted in the early part 
of September will now be getting established again, and should be given 
more air and water. The supply must be increased as the pots get filled 
with roots again, but do not overwater, or the compost will soon get sour, 
and the plants get sickly. It is better to let the plants get a little dry than 
give too much after repotting. A spray overhead on fine days will keep 
the foliage clean, and prevent thrip getting a start. Keep the house well 
damped, and give ventilation every time the weather will permit. A little 
aircan be given every day if given carefully. Do not make a draught 
when opening the ventilators, or the plants will be checked in their 
growth. 
During the dull months, when there is not much potting to be done, the 
plants should be gone round, and any that need it be sponged, especially 
Cattleyas and Leelias, pots kept clean, houses washed down, and walls 
lime-washed. Some growers object to lime-washing, preferring to let moss 
grow on the walls, but personally I prefer the light and cleanliness to be 
had from a white wall; it also gets rid of woodlice, ants, &c., when quick- 
lime is used and put. on while it is hot. It also sticks better if put 
on while hot. If damping is properly seen to plenty of moisture 
