Many years ago, there was found in an African mine the most magnificent diamond in the world's history. It was presented to the king of England to blaze in his crown or state. The king sent it to Amsterdam to be cut. It was put into the hands of an expert lapidary. And what do you suppose he did with it? He took the gem of priceless value, and cut a notch in it. Then he struck a hard blow with his instrument and—lo!—the superb jewel lay in his hand cleft in two. Did he do this out of recklessness, wastefulness, and criminal carelessness? Indeed not! For days and weeks t…