The limp, dangling leaves of some tropical trees are most curious. They are frequently quite red, just as are the young leaves of maples in temperate climates. It is not easy to say just why some plants have adopted this peculiar habit of letting the leaves grow full size before they are strong enough to stand out in proper fashion. Certain it is, however, that. by hanging down in this way the young, tender leaves are much less exposed, and hence in less danger of injury by excessive light and heat.