These signatures are on the very large and curious book-plate for Mons. Abel Lemercier, on which are to be found a collection of the various maledictions employed against book borrowers. POTIER, J. 19th cent. Aimé Leroy. Valenciennes. Library interior. Motto, “Mes livres _font_ (_sic_) (not _sont_ as sometimes quoted) ma joie.” Reproduced in “Ex-Libris Ana.” A. PRÉVOT _Scul._ Modern. Bibliothèque de Ch. Prèvot. This large plate is but a reproduction of a frontispiece designed by Bernard Picart, in 1712, for an edition of the works of J. B. Rousseau. This ex-libris is generally found printed on tinted paper. L. PROVOST _Graveur. Rue de Richelieu, 38, Paris_. Modern. PROVOST-BLONDEL. 19th cent. R. DE QUIRIELLE _invenit._ Ex libris Roger de Quirielle. Woodcut library interior. Modern. RAIGNIAULD, _Riomi_. (Regnault of Riomi in Auvergne.) A large nameless armorial plate, dated 1644, described by Warren, p. 140. (See reduced reproduction.) RAMEL _f._ 18th cent. Ex libris J. Vallat. Motto, “_Deus vallat justos_.” An armorial plate, shield in a distinctly Chippendale frame. RANDU. Connetablie te Maré Chaussée de France, 1779. (_sic._) Armorial. RAPARLIER _inv._ 1880. Monogram plate of Cordier, with the motto, “_Le flâne donc je suis_.” (Engraved by P. A. Varin.) REGNAULT, J. 18th cent. P. R. (PAUL REIBER). 1879. _Ex Libris Reiber._ M. Paul Reiber, of Strasbourg, engraved this pretty little plate for himself, and his brother, M. Ferdinand Reiber, who was a zealous collector of book-plates. See “Ex-Libris Alsaciens,” p. 42. REILLET _Imp: Quai de la Tournelle_, 35, Paris. Bibliothèque Pichon, 1874. This plate was engraved by P. A. Varin. RIBOULET-GOBY. 19th cent. T. RICHOMME _sculp. an xii_. De la bibliothèque de Mr. F. L. M. Richomme. Library interior. ROBERT ET LEPAGE. _Grs. Lith. Douai._ Sr. William de Sars, Chevalier. Anno 1858. Armorial. ROBIN. 18th cent. Gallatin. Armorial. ROCHEBRUNE, O. DE. Also signed _O. de Roch_: and _O. de R._ M. Octave de Rochebrune designed several book-plates for himself, and for members of his family, as well as for Benjamin Fillon, the author, and T. S. Montague. These are dated 1867, 1868, 1869, 1871, 1873. ROGER. 18th cent. M. C. ROLIDE, 1750. J. C. Q. E. H. Deviné. Pictorial. ROPS, FÉLICIEN. Modern. Emanuel Gideon. Pictorial. A correspondence about a book-plate wrongly attributed to this well-known artist will be found in the “Archives de la Société Française,” vol. i., pp. 149, 190, 195. ROSE. 18th cent. “Fait par Rose,” on a nameless armorial plate, background a field, with military tents. Motto, “_Quam foedari potius mori_.” ROSÉE, ALOYS, COM. DE LA. See Aloys. ROTTIERS, CAPT. “Fait a l’eau forte par le Capt. Rottiers ce 30 Aoust 1808.” On a nameless armorial plate ascribed to Comte de Hoeuff, of Holland. ROUARGUE. 19th cent. ROUSSEAU. 17th cent. P. LE. ROUX f. _à Paris le 14 Aoust_ 1704.