It continued calm until shortly after midnight that night, when a faint breathing came creeping up to us from the eastward, to which we spread our studding-sails, and, an hour later, we were bowling merrily along at a speed of nine knots.  The wind not only held through the night, but freshened with the sunrise, and throughout that day and the succeeding night our speed never fell below eleven knots, while for an hour or so, when it breezed up especially strong, our log showed that we were doing close upon fourteen.