{"product_id":"1543-libellus-de-sphaera-by-johannes-de-sacrobosco-antique-volvelles-illustrated","title":"1543 LIBELLUS de SPHAERA by Johannes de Sacrobosco ANTIQUE volvelles illustrated","description":"\u003ccenter\u003e\r\n\u003ch4\u003e\n\u003cspan style=\"font-size: 16pt\"\u003e\u003cspan style=\"font-size: 16pt\"\u003eJohannes de Sacrobosco (1195-1256)\u003cbr\u003e\u003cbr\u003eLibellus de Sphaera\u003cbr\u003e\u003cbr\u003e [Wittenberg: Petrus Seitz, 1543]\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e2 parts in one volume\u003cbr\u003e\u003cbr\u003e illustrated with woodcut text diagrams including 2  (of 3) constructed volvelles,\u003cbr\u003ethe third missing its moving parts; \u003cbr\u003e\u003cbr\u003eex libris Joannes Pollicarius with his signature to title dated 1544 \u003cbr\u003eand marginal notes in the same hand\u003cbr\u003e\u003cbr\u003eBritish bibliographer Gilbert R. Redgrave's (1844-1941) copy with his bookplate and two handwritten notes on the text on detached fly leaf\u003cbr\u003e\u003cbr\u003e octavo\u003cbr\u003e\u003cbr\u003eLater full vellum binding, new endpapers\u003cbr\u003e\u003cbr\u003eSize 4 by 6 1\/3 in.\u003cbr\u003e\u003cbr\u003eText in Latin\u003cbr\u003e=================================\u003cbr\u003eJohannes de Sacrobosco, also written Ioannes de Sacro Bosco, later called John of Holywood or John of Holybush (c. 1195 – c. 1256), was a scholar, Catholic monk, and astronomer who taught at the University of Paris.\u003cbr\u003e\u003cbr\u003eHe wrote a short introduction to the Hindu-Arabic numeral system. Judging from the number of manuscript copies that survive today, for the next 400 years it became the most widely read book on that subject.\u003cbr\u003eHe also wrote a short textbook which was widely read and influential in Europe during the later medieval centuries as an introduction to astronomy.\u003cbr\u003eIn his longest book, on the computation of the date of Easter, Sacrobosco correctly described the defects of the then-used Julian calendar, and recommended a solution similar to the modern Gregorian calendar three centuries before its implementation.\u003cbr\u003e===================================\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003eThank You \r\n\u003c\/h4\u003e\n\u003cp\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003c\/p\u003e\r\n\u003cp\u003eRefund Policy: We will issue a FULL REFUND, 100% money back if you are not satisfied with your purchase. Items must be returned to us within 20 days in order to receive a refund or replacement. Buyer is responsible for shipping costs.\u003c\/p\u003e\n\u003c\/center\u003e","brand":"Motka","offers":[{"title":"Default Title","offer_id":52272457056558,"sku":null,"price":2070.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/8017\/0286\/files\/205552-019jpg.jpg?v=1783115358","url":"https:\/\/motka.store\/products\/1543-libellus-de-sphaera-by-johannes-de-sacrobosco-antique-volvelles-illustrated","provider":"Motka","version":"1.0","type":"link"}