471, quoting _A General and Descriptive History of Liverpool_ (1795).] [Footnote 24: _Ibid_., p.

472 and appendix 7.] [Footnote 25: Edward Long, _History of Jamaica_ (London, 1774), p.

492 note.] [Footnote 26: Corner Williams, Appendix 13.] The ship captains in addition to their salaries generally received commissions of "4 in 104," on the gross sales, and also had the privilege of buying, transporting and selling specified numbers of slaves on their private account.

When surgeons were carried they also were allowed commissions and privileges at a smaller rate, and "privileges" were often allowed the mates likewise.

The captains generally carried more or less definite instructions.