116 THE ORCHID REVIEW. 
extremely simple, and consists principally in shading well froin the sun’s 
rays, admitting large volumes of air both night and day whenever the out- 
side conditions are at all seasonable, and keeping plenty of moisture dis- 
tributed about the plants and about the house. But, fond of moisture as O. 
crispum undoubtedly is, the compost in which it is growing should not be 
kept continually in a state of saturation. Mr. Robert Thompson has told 
us that even at Bogota there is a dry season, and I have proved beyond 
doubt that it does not pay to keep the plants continually saturated under 
artificial cultivation. There seems something unnatural about iti 
crispum is not found growing in bogs and marshes, but high up in the 
branches of trees, exposed to the full breezes, where it is tnorally certain 
they must sometimes get dry, roots and all. That they like water and can 
hot get on for long without is well known, but I like to see my crispums 
get dry at the roots before I again water them; the watering they receive in 
the meantime is overhead syringing with tepid water, about twice daily. 
This syringing is sufficiently heavy to thoroughly wet the foliage, and to 
moisten the surface of the compost, but not heavy enough to saturate 
the whole mass. 
WINTER TREATMENT.—The treatment is also very simple in winter. A 
temperature of from 50° to 60° should be generally had if possible. It may 
go a little higher in bright, warm weather. or it may go lower, it may go to 
40° even in very cold weather for short periods, when much fire heat is 
wanted, because with the extra fire heat the atmosphere would be sure to 
be rather dry, even though the house might be damped down about once 4 
day. During winter, ventilation should be freely given, both night and 
day, when the weather outside is mild and damp, but less when it is colder, 
and then by means of the bottom ventilators only. There will also be 
periods when it is so cold that it is best to keep all ventilators tightly closed. 
Keep much less moisture about the house in winter than in summer. When 
the weather is mild and damp, and but little if any fire heat is wanted, as 
is often the case, whole days may pass by without it being necessary to 
damp down or water at all—the outside air, if allowed to enter, being 
sufficiently charged with moisture. At this period one should be parti- 
cularly careful not to over-water at the root. Make a point of keeping the — 
whole of the plants—no matter in what stage of growth they are—on the 
dry side. Do not, however, keep them dust dry, so as to cause excessive 
shrivelling. Those among them that are forming their growth should have 
d verjylitthecmoste wadter-than those which have completed their pseudobulbs 
+ houghbomly: tm keep thei: goin grist dily adong. i [fothehouse is.wvell 
cxposeditp lightsarid airpitlisvaogod plaiméo follow the qsiacticellfrover- heat? 
syringing in winter also, doing itoigsjtielrovfbrant water ingy rand det tegen Oh 
plantis get: pretty:drys ibe fgné the operation, arif-chousing the moming of 4 
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