[Larger Image]

CYPRIPEDIUM × DR RYAN.
Painted from nature also Chromo by Macfarlane F.R.H.S.
Printed in London

THE COOL HOUSE

contains about three thousand plants, mostly Odontoglossums. It is a ‘lean-to,’ of course. Not all the most successful growers use this form of building. Baron Schröder’s world-famous Odontoglots dwell in an oblong structure which receives an equal quantity of light from every side. Even the hardiest of epiphytal orchids are conscious of influences which we cannot grasp, and those who understand them are unwilling to lay down fixed rules. But experience shows that under ordinary conditions cool species thrive in a ‘lean-to’ better than in a house of full span. It may be because the back wall retains moisture and gives it out all day steadily, whilst the air is saturated and dried by turns if fully exposed to a hot sun. Or it may be because the full light of a span-roof is too strong in most situations. A collector once told me that he often found Odontoglossum Pescatorei so buried in Lycopodium as to be invisible until the flower-spike appeared. Evidently such a plant does not need strong light. Both causes operate, perhaps. At least the broad fact is so well established that one might almost fancy Baron Schröder’s Odontoglots would do better, if that were possible, in a ‘lean-to.’

There are three glass partitions, but from either door the full length of the house is seen; a pleasing vista even when there are no flowers—all smoothly green on one hand, rocky bank upon the other, studded with ferns and creepers and an orchid here and there. Why these plants dislike to stand in a long house open from end to end is a question none the less puzzling because every gardener is ready to explain it. Loving fresh air so well they cannot object to the brisker circulation. But their whims must be respected, and after building a house ninety feet long we must divide it into compartments.

I name a few among the rarities here. Of Odontoglots:—