The labours of the committee, during my absence, were as I have now explained them; but as I was obliged, almost immediately on joining them, to retire into the country to begin my new work, I must give an account of their further services till I joined them again, or till the middle of February 1788.

During sittings which were held from the middle of December 1787 to the eighteenth of January 1788, the business of the committee had so increased, that it was found proper to make an addition to their number. Accordingly James Martin and William Morton Pitt, esquires, members of parliament, and Robert Hunter, and Joseph Smith, esquires, were chosen members of it.

The knowledge also of the institution of the society had spread to such an extent, and the eagerness among individuals to see the publications of the committee had been so great, that the press was kept almost constantly going during the time now mentioned. No fewer than three thousand lists of the subscribers, with a circular letter prefixed to them, explaining the object of the institution, were ordered to be printed within this period, to which are to be added fifteen hundred of Benezet's Account of Guinea, three thousand of the Dean of Middleham's Letters, five thousand Summary Views, and two thousand of a new edition of the Slavery and Commerce of the Human Species, which I had enlarged before the last of these sittings from materials collected in my late tour.