By the time that she had got the reefs out of her immense mainsail, and had set an enormous gaff-topsail above it, we had drawn so far ahead of her as to bring her a couple of points upon our weather quarter, whereupon we tacked, the advantage gained being solely due, I imagined, to the slowness of her crew in making sail.  When we were round, and full upon the other tack, she was still quite three miles distant, and bore about a point on our lee-bow; but of course she very soon drew out athwart our hawse, and now everything seemed to depend upon which was the more weatherly craft of the two.  Seen from the fore-topmast crosstrees--to which I ascended for the purpose of getting a good look at her--she appeared to be one of those immensely beamy, shallow craft, copied from the slavers; and those vessels, I knew, although they generally sailed like witches, were often anything but weatherly.  Yet I had heard of vessels thus modelled for the sake of securing speed, and fitted with a very deep keel to ensure weatherliness, where light draught of water was not a consideration; and it remained to be seen whether the brigantine was a craft of this class.