SENANCOUR Etienne Pivert de. De l'Amour, considéré dans les Lois réelles, et dans les formes sociales de l'Union des Sexes. Paris, Cérioux, Arthus Bertrand, 1806; in-8 of [4]-xvi-pp. pp. 13 to 287, (1) p. of errata, 1. manuscript f. added, contemporary binding half natural basane with small vellum corners, smooth spine stained brown decorated with gilt fillets, red parts, spotted edges. First edition "rare and sought after" according to Gay. "Well written and well thought out (...) the author delves so deeply and so boldly into his subject that we can recognise in him one of the precursors of socialism, as far as moral issues are concerned, of course. For the rest, he was a counter-revolutionary, and had been forced to emigrate" (Idem). A few notes in pencil and corrections in ink. An early reader has made a handwritten table on the last flyleaf - Ex-libris Ronnie Binehof. J. Merlant, p. 25, edition A.- Gay, I, 810.