The arte of nauigation : conteining a compendious description of the sphere, with the making of certayne instrumentes and rules for nauigations, and exemplified by many demonstrations. Written by Martin Cortes, Spaniarde, Englyshed out of Spanishe by Richarde Eden, and now newly corrected and amended in diuers places. 1584. VVhereunto may be added at the wyll of the byer, another very fruitefull and necessary booke of nauigation, translated out of Latine by the sayd Eden. And printed by Iohan Iugge wydowe.