He showed that their importance would be increased, and the temporal interest of their masters promoted, by giving them freedom, and by granting them other privileges.

He showed the great difficulty of instructing them in the state in which they then were, and such as he himself had experienced both in his private and public attempts, and such as others had experienced also.

He stated the way in which private attempts of this nature might probably be successful.

He then answered all objections against their capacities, as drawn from philosophy, form, anatomy, and observation; and vindicated these from his own experience.

And lastly, he threw out ideas for the improvement of their condition, by an establishment of a greater number of spiritual pastors among them; by giving them more privileges than they then possessed; and by extending towards them the benefits of a proper police.