268 THE ORCHID REVIEW. (SEPTEMBER, 1906, 
similar conditions to Odontoglossum crispum, but are much more liable to 
be attacked by thrips, so that they must be kept well under observation, — 
There is always in a house one end warmer than the other, and this should _ 
be the position selected in the Odontoglossum house for Masdevallias; it 
need not be the lighter side. 
There will be a few late-flowering species of Cattleya and Lelia which 
may require potting this month, and others will be flowering or coming into — 
flower, but how to treat them has been dealt with at considerable length 
in previous Calendars. In collections which have many representatives of — 
the different genera in cultivation—and I am afraid that we can make little 
pretentions in this respect at Chessington—there will be a good many — 
different things which will require repotting before the winter sets in. ) 
SEASONABLE REMARKS.—Before the end of the month shading will be — 
little more required, and it should be dispensed with on all the houses as — 
Soon as ever it is possible, with safety. September and October are two 
months in which an inexperienced man is apt to make many mistakes. 
Lengthy details might be summarised into the word—moderation 
Moderation in damping, watering, airing, shading, firing. All these things — 
are necessary, but in moderation. Let things go on steadily, and be 7 
Satisfied with the progress made. Many bulbs which have a finished look — 
are yet green and succulent, and will fill out astonishingly, but do not try 
to hurry them. Do not try to economise fuel by keeping the ventilators 
unduly close, but let all the houses have air while there is still light, and 
the plants will go through the winter well. Too much damping is fatal, — 
and do not be seduced into syringing heavily overhead at three o'clock — 
because the sun is strong. You may find the water on the foliage next 
morning. The syringe is now becoming a dangerous instrument. Shutting 
up the houses in the afternoon should now be discontinued. 
TEMPERATURES.— The day temperatures will still be largely a question 
controlled by outside conditions, and the night temperatures should read 
something like the following :— 
East Inpian House, 70°. CaTTLEYA House, 65°. | 
INTERMEDIATE House, 60°. ODONTOGLOssUM HOUSE, 55° ES 
These temperatures should be maintained, with a fair amount of ait ? : 
_ the houses, having, during favourable weather—with the exception of: 4 
East Indian House—both the top and bottom ventilators a little bit op 
During sunless weather the temperatures should rise at least 5° - . 
in the daytime, and on warm nights the above temperatures may be exce 
a little. 
OVERCROWDING IN THE OrcHID Houses.—An evil which it would ‘ 3 
difficult to overestimate is overcrowding plants in the Orchid houses ei : 
Orchids will stand anything, but the majority resent overcrowalNe: 
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