Not only does its name anticipate the American document of a century later, the English Bill of Rights anticipates some of the American billâs specific provisionsâfor example, the Eighth Amendmentâs ban on excessive bail and fines and on cruel and unusual punishment.
If the leaf contains carotene, as do the leaves of birch and hickory, it will change from green to bright yellow as the chlorophyll disappears. In some trees, as the concentration of sugar in the leaf increases, the sugar reacts to form anthocyanins. These pigments cause the yellowing leaves to turn red.
So: mystery, in some ways, resolved. Howard Neufeld can with some accuracy predict when the leaves will change. He can tell you how they do it â and even why. But if the leaves change, one thing doesn't. The neat thing about predicting fall color for various groups, he says, is I have to go out and look at the fall colors. There's no better job.