Post Lot Text
First edition of Kepler's logarithmic tables, including explanations of their nature and use. Kepler, who had welcomed Napier's invention (announced in 1614) but only knew his logarithms from Ursinus (1618), was obliged to create his own tables and extend them in order to do the recalculations of Tycho Brahe's Rudolphine planetary tables (see lot 102). Very fine copy, complete with the supplement of the following year and in a contemporary flexible vellum binding. OF THE GREATEST RARITY.