At about four o'clock on a windy, warm September afternoon, four girls came out of the post-office of Monroe, California. They had loitered on their way in, consciously wasting time; they had spent fifteen minutes in the dark and dirty room upon an absolutely unnecessary errand, and now they sauntered forth into the village street keenly aware that the afternoon was not yet waning, and disheartened by the slow passage of time. At five they would go to