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, in Italian Giuntino, a celebrated mathematician and astrologer of the sixteenth century, was born 1523, at Florence. He published Commentaries, in Latin, on the Sphaera of Holywood or Sacro Bosco, 1577 and 1578, 2 vols. 8vi; “Speculum Astrologiae,” Lngd. 1581, 2 vols. fol. and other works relating to astronomy. There is also a treatise written by him in French on the comet which appeared in 1577, 8vi; and another on the reformation of the calendar by Gregory XIII. 8vi, in Latin. He had quitted the Carmelite order, and became a protestant, but returned afterwards to the Catholic church, and spent the chief of his life at Lyons, where his conduct was very irregular. He died 1590. a