in 1620, in whose declaration occurs the phrase, “We do solemnly and mutually, in the presence of God and of one another, covenant and combine ourselves together into a civil body politic.” The natural implication of this view would seem to be the corollary of complete popular Sovereignty which Rousseau draws. But before Rousseau’s time it had been used to support views as diverse as those which rested on the first form. We saw that, in Grotius’s great work, De Jure Belli et Pacis , it was already possible to doubt which of the two theories was being advocated. The first theory was, historically, a means of popular protest against royal aggression. As soon as popular government was taken into account, the act of contract between people and government became in effect merely a contract between the individuals composing the society, and readily passed over into the second form.