“Rerum Scoticarum historia, auctore Georgio Buchanano.” 8vo. 1643 “Renati Descartes Principia philosophiæ, cum privilegio.” 4to. 1644 ” specimina philosophiæ, cum privilegio.” 4to. 1644 At the time of the publication of these first editions of treatises which were to revolutionise the thought or at least the metaphysical theories of Europe, Descartes was living at The Hague. He died in Stockholm (whither he had been called by Queen Christina) in 1650. The works of Descartes were reprinted by the Amsterdam House no less than six times. “Thomæ Cartwright, S. S. Theol. in Academia Cantabrigensi quondam professoris. Harmonia Evangelica,” etc. 4to. 1647 “Elementa philosophica de cive, auctore Thom. Hobbes, Malmesburiensi.” 12mo. 1647 The author was at this time 59 years old. He lived to be 91, dying in 1679. Fr. Baconis de Verulamio “Sylva Sylvarum.” 12mo. 1648 “Les Passions de l’Ame, par René Descartes.” 8vo. 1649 “L’Alcoran de Mahomet, traduit d’arabic en françois par le Sieur du Ryer, suivant la copie imprimée à Paris,” etc. Another issue of the same date bears the words “Jouxte la copie,” the old indication of an “appropriated” work. A series of Latin and Greek classics in 12mo, in the general style of the series issued some years earlier in Leyden, was published between the years 1640 and 1655. “Adagiorum Des. Erasmi Roterodami epitome.” 12mo. 1650 “Colloquia Desid. Erasmi Roterodami, nunc emendatiora,” etc. 12mo. 1650 “Hugonis Grotii, quaedam haetenus inedita aliaque ex belgice editio latine versa,” etc. 12mo. 1652 “Francisci Baconi Scripta in naturali et universali philosophia.” 12mo. 1653 “Historia Gothorum, Vandalorum et Longobardorum, ab Hugone Grotio,” etc. 8vo. 1655 With this important history, Louis completed the record of his individual publications. Louis and David Elzevir were associated from 1655 to 1664, a period of nine years, during which time they published one hundred and forty-nine works. These included a number of new editions of works previously published by the House, either in Leyden or in Amsterdam. I cite the following titles, omitting all reissues: “Le secrétaire à la mode, par le Sieur de la Serre, contenant l’instruction d’escrire des lettres,” etc. 12mo. 1656 “Le Pastissier François.” 12mo. 1656 Two volumes of practical household instruction, forming an exception to the general character of the list.