SEPTEMBER, 1910.] THE ORCHID REVIEW. 275 
atmosphere, without having the houses too close or damp. If the ventilat- 
ing is carefully done a genial condition can easily be kept. 
SPRAYING. —Spray the plants overhead as often as can be done with 
safety, bearing in mind the time of year. It can safely be done on all 
bright days, but not quite so late in the afternoon as during the preceding 
month. The nights now get cool and moist, so that it is not required for 
night moisture, and you are apt to get too great a condensation of moisture 
upon the plants in case of a fall in temperature. 
TEMPERATURES for the month should range as nearly as possible as 
follows :— 
Cypripedium house, day, 70° to 75°; night, 70°; morning, 65°. 
Cattleya house, day, 65° to 70°; night, 65°; morning, 60°. 
Intermediate house, day, 62° to 68°; night, 62°; morning, 58°. 
Odontoglossum house, day, 60° to 62°; night, 58°; morning, 56°. 
CATTLEYAS.—The beautiful C. Dowiana aurea will be in flower this 
month, and where a good number of them are grown a succession of flower 
will be kept up for several weeks. After the flowers are off they require 
very careful treatment right through the winter. They should be very 
carefully watered, as an overdose during winter is often fatal to them, but 
they should not be allowed to get dust dry. Some growers pot them as 
soon as new roots are seen after flowering, but I prefer to pot them when 
new roots are pushing early in the year, as they then have the best part of 
the season in which to re-establish themselves. C. Lueddemanniana and 
C. Eldorado will also flower during the month, and require similar treat- 
ment. C. Harrisone, Loddigesii, Leopoldi, bicolor, and granulosa will be 
making a good show towards the end of the month. The Cattleya house 
should be fumigated a time or two while they are in bud, to make sure there 
are no thrips about, which are very partial to these Cattleya flowers and 
soon spoil them. C. Gaskelliana will have finished flowering, and should 
be given a good rest until the new growths commence to push next spring. 
CyprRipEDIUMS.—C. Charlesworthii will be making a good show this 
month, where they are grown in quantity, and a good batch is worth having, 
for there is a large range of variety among them. It isa rather small and 
slow growing species, but is very free flowering when properly grown. I 
find that it does best when grown in a moist and shady position at the cool 
end of the Intermediate house, although it will grow in the Cool house, but 
not nearly so well. They are especially fond of moisture during the 
growing season, and should be kept well syringed. After flowering the 
plants will not be very active until February, therefore they should be kept 
much drier during the winter months, but should not be allowed to get 
quite dry. When cleaning them—either the pots or plants—great care 
