Soon after this he took Samuel Eastburne as a coadjutor, and pleaded the cause of the poor Africans with many of the society in Bucks county, who held them in bondage there.
In the year 1760, he travelled, in company with his friend Samuel Eastburne, to Rhode Island, to promote the same object.

This island had been long noted for its trade to Africa for slaves.

He found at Newport, the great sea-port town belonging to it, that a number of them had been lately imported.

He felt his mind deeply impressed on this account.

He was almost over-powered in consequence of it, and became ill.