As soon as it became apparent that some hours would probably elapse before we could go into action, I gave orders for the guns to be secured and the galley fire to be lighted again, in order that the men might not be deprived of their usual dinner; and this meal was just nicely over when, to our utter amazement, the chase suddenly hoisted the black flag, bore up, and with squared yards came running down with the obvious intention of coming to close quarters with us; whereupon we once more made ready for battle, at the same time shortening sail to our ordinary working canvas.  At first I was distinctly puzzled to account for or understand this sudden change of tactics upon the part of the pirates; but a remark of Henderson's seemed to offer a tolerably plausible explanation of it.