Mackerel nets have larger meshes, being twenty-four or twenty-five to the yard.  They are not so deep as the herring nets, but they are twice as long, often extending to a distance of nearly two miles and a half. Occasionally in one night a single boat has taken from twelve to fourteen lasts of herrings, each last numbering ten thousand fish; but of course the catch is uncertain.  One boat, however, has been known to bring in the enormous quantity of twenty lasts.  Some few years ago upwards of nine thousand lasts, or nearly one hundred and twenty millions of fish, were caught by the Yarmouth luggers.  Several vessels bring in one hundred lasts each.