M. Blundeuile 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 haue not bene exercised in such disciplines, and yet are desirous to haue knowledge as well in cosmographie, astronomie, and geographie, as also in the art of nauigation ... To the furtherance of which art of nauigation, the said M. Blundeuile specially wrote the said treatises, and of meere good will doth dedicate the same to all young gentlemen of this realme.