Simpson's estimate of the time at our disposal proved to be a very close one, for the sun was within ten minutes of setting when, all our preparations having been completed, I followed the rest of our little party over the side, and, entering the longboat, gave the order to shove off and steer north-west in company.  There was at this time a very pleasant little breeze blowing, of a strength just sufficient to permit the boats to carry whole canvas comfortably; the water was smooth, and the western sky was all ablaze with the red and golden glories of a glowing tropical sunset.