RAMUS, 2 EDITIONS OF ARITHMETICAE LIBRI DUO, 1581 AND 1613

i. Arithmeticae libri duo. A Jo. Stadio, Regio & Rameæ profesionis Mathematico, recogniti & illustrati. Paris: Denis Duval, 1581, 8vo, folding table at end, old vellum, modern slipcase, (E.&L. Heiskanen, bookplate on slipcase; bought from Ludwig Rosenthal, Hilversum, 1994), [FB 84396; Smith, Rara arithmetica, p.330; USTC 170552], repair to verso of folding table, binding slightly soiled and lacking tiesii. Arithmeticae libri duo, cum commentariis Wilebrori Snelli. [Leiden]: Franciscus Raphelengius (Officina Plantiniana), 1613, 8vo, woodcut initials, modern boards, (bought from Pickering & Chatto, London, 1989), [Hoogendoorn p.831 SnelliW07; STCN 840397682]

Erwin Tomash, booklabels

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Willebrord Snellius (1580-1626), who had succeeded his father Rudolphus in 1613 as a professor of mathematics in Leiden, here revises his father's edition of Pierre de la Ramée's textbook (Leiden: Plantin, 1584).