Captioned: "Briefe description of the tables of three speciall right lines belonging to a circle, called signes, lines tangent, and lines secant. Thomas Blundeville. His exercises, containing eight treatises, the titles whereof are set down in the next printed page: which treatises are very necessarie to be read and learned of all young gentlemen, that have not beene exercised in such disciplines, and yet are desirous to have knowledge as well in cosmographie, astronomie, and geographie, as also in the art of navigation, in which art it is impossible to profite without the helpe of these, or such like instructions, page 301, fourth edition corrected and augmented, London, 1613." Thomas Blundeville (522 - 1606) was an English humanist writer and mathematician. He is known for work on logic, astronomy, education and horsemanship, as well as for translations from the Italian. His later works were directed towards geography, navigation and travel. The Exercises (1594) collected six treatises on practical skills, with a serious effort to be up-to-date. He described the world map of Petrus Plancius, Molyneux's globes, the work of John Blagrave and Gemma Frisius, and the cross-staff of Thomas Hood. A later edition (1613) showed the circumnavigations of Francis Drake and Thomas Cavendish.