Padua: Agostino Candiano, 1685.
2nd Edition. Hardcover. 4to - over 9¾ - 12" tall. Very Good. Item #003006
4to (245 x 180 mm). 16, 223, , 64,  pp., including woodcut head- and tailpieces, 7 folding engraved plates bound at end, without blank leaf b4 of preface. Signatures: A4, b4, B-Ff4, A-H4, k2. Contemporary carta rustica, spine lettered in ink (some spotting and soiling). All pages untrimmed, leaves A3-4 loose. Very little browning, very minor occasional spotting, small worm tracks (a bit stronger to lower blank margin of gatherings F-H and upper margin of gatherings F-H of tabulae affecting headlines text on a few pages, minor repair to b2 and lower outer corner of last two gatherings. Provenance: Giancarlo Beltrame Library; cancelled library inscription to title-page dated 1725. ----
VERY RARE SECOND EDITION. This work includes Mercator's Hypothesis astronomica nova which presents his modified Keplerian system of elliptical orbits, originally published in 1664. Nicholas Mercator (1620-1687), also known by his German name Kauffmann, was a mathematician and astronomer who lectured at the University of Copenhagen during 1648-1654 and lived in Paris from 1655 to 1657. He was mathematics tutor to Joscelyne Percy, son of the 10th Earl of Northumberland, at Petworth, Sussex in 1657 and also taught mathematics in London from 1658 to 1682. In 1666, he was elected a Fellow of the Royal Society. Mercator is most well known for his treatise Logarithmo-technia on logarithms, published in 1668. In this treatise he described the Mercator series, also independently discovered by Gregory Saint-Vincent. - Visit our website for additional images and information.
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