They are not allowed to fight a duel, nor to use weapons of any kind.

The blows are made by kicking, knocking, and butting with their heads; they grab each other by their ears, and jam their heads together like sheep.

If they are likely to hurt each other very bad, their masters would rap them with their walking canes, and make them stop.

After fighting, they make friends, shake hands, and take a dram together, and there is no more of it.
But this is all principally for want of moral instruction.

This is where they have no Sabbath Schools; no one to read the Bible to them; no one to preach the gospel who is competent to expound the Scriptures, except slaveholders.