The early reactions of Englishmen to the famous works of Jean Jacques Rousseau have never been adequately studied. Jacques Pons, Louis J. Courtois, and Margaret Hill have been the only writers to present well-documented studies of any large phase of the subject; but their attention has been confined to the impact of Rousseau's pedagogical theories and to various aspects of his visit in England during the years 1766–67. Even the bibliography of Théophile A. Dufour is very incomplete in its citations of English editions. Under these circumstances, authors have generally taken refuge in assertions of tremendous and universal influence emanating from Rousseau, or they have surmised as to the effect of his works in England. The present work undertakes to provide a basis for more definite conclusions. The numerous assertions of the impetus which Rousseau is alleged to have given to the “romantic” revival of the late eighteenth century are familiar, and we know already that the diffusion of his works in England was wide. Furthermore, the first production of the French writer to excite attention there was the Discours sur les sciences et les arts (1750); and, although several works intervened, including the Devin du village (1752), Narcisse (1752), and the Lettre sur la musique française (1753), the next writing to excite comment was the Discours sur l'origine de l'inégalité (1755). Thus, although Rousseau's diffusion and popularity in England were due chiefly to La nouvelle Héloïse, the two Discours mark the beginning of his reputation in that country. Furthermore, the theses of these two productions have been closely associated with Rousseau. The insistence in the first Discours upon the baneful effect of modern civilization was also closely allied with the praise of primitive life in the second, and the designation of private property as the source of human inequality. Moreover, both of these productions questioned the justice of existing institutions; and Roussean himself maintained that, with Émile, they form a single entity.