He condemns duelling, but admits that, where it is established, a man may, in some cases, be justified in sending or accepting a challenge.
Chapter XVI.

Rights belonging to society as against the individual.

The perfect rights of society are such as the following:--( 1) To prevent suicide; (2) To require the producing and rearing of offspring, at least so far as to tax and discourage bachelors; (3) To compel men, though not without compensation, to divulge useful inventions; (4) To compel to some industry, &c.
Chapter XVII.

takes up some cases where the ordinary rights of property or person are set aside by some overbearing necessity.
Chapter XVIII.

The way of deciding controversies in a state of nature by arbitration.
Book III .-- Civil Polity, embracing Domestic and Civil Rights.
Chapter I._Marriage_.Hutcheson considers that Marriage should be a perpetual union upon equal terms, 'and not such a one wherein the one party stipulates to himself a right of governing in all domestic affairs, and the other promises subjection.' He would allow divorce for adultery, desertion, or implacable enmity on either side.